PK v\_rels/PK v\ docProps/PK v\ppt/PK v\ ppt/_rels/PK v\ ppt/charts/PK v\ppt/charts/_rels/PK v\ppt/embeddings/PK v\ ppt/media/PK v\ppt/slideLayouts/PK v\ppt/slideLayouts/_rels/PK v\ppt/slideMasters/PK v\ppt/slideMasters/_rels/PK v\ ppt/slides/PK v\ppt/slides/_rels/PK v\ ppt/theme/PK v\ppt/notesMasters/PK v\ppt/notesMasters/_rels/PK v\ppt/notesSlides/PK v\ppt/notesSlides/_rels/PK v\z[Content_Types].xml PK v\]] _rels/.rels PK v\+t@DdocProps/app.xml 0 0 Microsoft Office PowerPoint On-screen Show (16:9) 0 86 86 0 0 false Fonts Used 2 Theme 1 Slide Titles 86 Arial Calibri Office Theme Slide 1Slide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Slide 17Slide 18Slide 19Slide 20Slide 21Slide 22Slide 23Slide 24Slide 25Slide 26Slide 27Slide 28Slide 29Slide 30Slide 31Slide 32Slide 33Slide 34Slide 35Slide 36Slide 37Slide 38Slide 39Slide 40Slide 41Slide 42Slide 43Slide 44Slide 45Slide 46Slide 47Slide 48Slide 49Slide 50Slide 51Slide 52Slide 53Slide 54Slide 55Slide 56Slide 57Slide 58Slide 59Slide 60Slide 61Slide 62Slide 63Slide 64Slide 65Slide 66Slide 67Slide 68Slide 69Slide 70Slide 71Slide 72Slide 73Slide 74Slide 75Slide 76Slide 77Slide 78Slide 79Slide 80Slide 81Slide 82Slide 83Slide 84Slide 85Slide 86 PptxGenJS false false false 16.0000 PK v\Ģ 8  docProps/core.xml Anorectal Disorders MCQ Bank PptxGenJS Presentation Prof. Zahid Mahmood Prof. Zahid Mahmood 1 2026-06-17T14:48:59Z 2026-06-17T14:48:59Z PK v\]0101ppt/_rels/presentation.xml.rels PK v\Oݨ ppt/theme/theme1.xmlPK v\- [[ppt/presentation.xml PK v\Xppt/presProps.xml PK v\ppt/tableStyles.xml PK v\D >00ppt/viewProps.xml PK v\H7t!ppt/slideLayouts/slideLayout1.xml PK v\ђ77,ppt/slideLayouts/_rels/slideLayout1.xml.rels PK v\I=Őppt/slides/slide1.xml Bismillah-ir-Rahman-ir-RahimAnorectal DisordersOne Best Answer MCQ Bank — 40 QuestionsHaemorrhoids | Anal Fissure | Fistula-in-Ano | Perianal AbscessFor Final Year MBBS StudentsRxPrepared by Prof. Zahid MahmoodProfessor of Surgery, Lahore Medical & Dental College | 03004130159 | professorzahid.comPK v\3 ppt/slides/_rels/slide1.xml.rels PK v\.ppt/notesSlides/notesSlide1.xml 1PK v\:A*ppt/notesSlides/_rels/notesSlide1.xml.rels PK v\SaF F ppt/slides/slide2.xml 10Haemorrhoids10 MCQs — One Best Answer FormatPK v\2- ppt/slides/_rels/slide2.xml.rels PK v\ppt/notesSlides/notesSlide2.xml 2PK v\xշ*ppt/notesSlides/_rels/notesSlide2.xml.rels PK v\p9ppt/slides/slide3.xml MCQ 1Haemorrhoids | EasyA 40-year-old man presents with painless bright red bleeding per rectum after defecation, noticed on the toilet paper, for 3 weeks.What is the most likely diagnosis?A. Anal fissureB. Carcinoma of the rectumC. HemorrhoidsD. Perianal abscessE. Ulcerative colitisPK v\W/ ppt/slides/_rels/slide3.xml.rels PK v\K |Őppt/notesSlides/notesSlide3.xml 3PK v\9 Y*ppt/notesSlides/_rels/notesSlide3.xml.rels PK v\G"`ppt/slides/slide4.xml MCQ 1 — AnswerHaemorrhoids Correct Answer: C. HemorrhoidsExplanationPainless, bright red bleeding noticed after defecation, separate from the stool, is the classic presentation of hemorrhoids, caused by engorgement of the anal cushions.PK v\` ppt/slides/_rels/slide4.xml.rels PK v\vsppt/notesSlides/notesSlide4.xml 4PK v\J *ppt/notesSlides/_rels/notesSlide4.xml.rels PK v\j9nppt/slides/slide5.xml MCQ 2Haemorrhoids | EasyA 35-year-old woman in her third trimester of pregnancy develops a swelling that prolapses from the anus during defecation but reduces on its own once she stands up.What grade of hemorrhoids does this represent?A. Grade IB. Grade IIC. Grade IIID. Grade IVE. Thrombosed external hemorrhoidPK v\5 ppt/slides/_rels/slide5.xml.rels PK v\W8ppt/notesSlides/notesSlide5.xml 5PK v\Qe*ppt/notesSlides/_rels/notesSlide5.xml.rels PK v\rppt/slides/slide6.xml MCQ 2 — AnswerHaemorrhoids Correct Answer: B. Grade IIExplanationGrade II hemorrhoids prolapse with straining or defecation but reduce spontaneously without the need for manual reduction, distinguishing them from Grade III (needs manual reduction) and Grade IV (irreducible).PK v\ج+ ppt/slides/_rels/slide6.xml.rels PK v\zppt/notesSlides/notesSlide6.xml 6PK v\=|*ppt/notesSlides/_rels/notesSlide6.xml.rels PK v\gNNppt/slides/slide7.xml MCQ 3Haemorrhoids | ModerateA 50-year-old man has Grade II hemorrhoids causing intermittent bleeding. He has tried increased dietary fiber and stool softeners for 6 weeks without significant improvement.What is the most appropriate next step in management?A. Excisional hemorrhoidectomyB. Lord's manual dilatationC. Rubber band ligationD. Stapled hemorrhoidopexyE. Topical steroid cream onlyPK v\F ppt/slides/_rels/slide7.xml.rels PK v\)lppt/notesSlides/notesSlide7.xml 7PK v\|g*ppt/notesSlides/_rels/notesSlide7.xml.rels PK v\/ppt/slides/slide8.xml MCQ 3 — AnswerHaemorrhoids Correct Answer: C. Rubber band ligationExplanationFor Grade I-II hemorrhoids that fail to respond to conservative dietary measures, rubber band ligation is the next appropriate step, an effective outpatient procedure with low complication rates.PK v\6 ppt/slides/_rels/slide8.xml.rels PK v\iސppt/notesSlides/notesSlide8.xml 8PK v\pO*ppt/notesSlides/_rels/notesSlide8.xml.rels PK v\ %yyppt/slides/slide9.xml MCQ 4Haemorrhoids | ModerateA 45-year-old man undergoes rubber band ligation for internal hemorrhoids. Six hours later he presents with severe anal pain.What is the most likely explanation for this pain?A. Anal fissure formationB. Band placed too close to the dentate line, involving somatically innervated tissueC. Normal expected outcome requiring no actionD. Perianal hematoma unrelated to the procedureE. Thrombosed external hemorrhoidPK v\>$ ppt/slides/_rels/slide9.xml.rels PK v\qppt/notesSlides/notesSlide9.xml 9PK v\1*ppt/notesSlides/_rels/notesSlide9.xml.rels PK v\+GEEppt/slides/slide10.xml MCQ 4 — AnswerHaemorrhoids Correct Answer: B. Band placed too close to the dentate line, involving somatically innervated tissueExplanationSevere pain after rubber band ligation usually indicates the band was placed too close to or below the dentate line, capturing somatically innervated (pain-sensitive) anoderm rather than the insensate mucosa above it; the band may need to be removed.PK v\Ѳ!ppt/slides/_rels/slide10.xml.rels PK v\O ppt/notesSlides/notesSlide10.xml 10PK v\T+ppt/notesSlides/_rels/notesSlide10.xml.rels PK v\P-{ppt/slides/slide11.xml MCQ 5Haemorrhoids | ModerateA 55-year-old man has Grade III hemorrhoids requiring manual reduction after each bowel movement, with recurrent bleeding despite two prior rubber band ligation sessions.What is the most appropriate management?A. Excisional (Milligan-Morgan) hemorrhoidectomy or stapled hemorrhoidopexyB. Increase dietary fiber aloneC. Injection sclerotherapy aloneD. Repeat rubber band ligation a third timeE. Topical glyceryl trinitratePK v\;!ppt/slides/_rels/slide11.xml.rels PK v\s6ӑ ppt/notesSlides/notesSlide11.xml 11PK v\O+ppt/notesSlides/_rels/notesSlide11.xml.rels PK v\K݀fppt/slides/slide12.xml MCQ 5 — AnswerHaemorrhoids Correct Answer: A. Excisional (Milligan-Morgan) hemorrhoidectomy or stapled hemorrhoidopexyExplanationGrade III hemorrhoids failing non-operative measures including banding are managed with surgical hemorrhoidectomy or stapled hemorrhoidopexy, which provide more definitive treatment for higher-grade disease.PK v\c!ppt/slides/_rels/slide12.xml.rels PK v\*)@ ppt/notesSlides/notesSlide12.xml 12PK v\Fb+ppt/notesSlides/_rels/notesSlide12.xml.rels PK v\+00ppt/slides/slide13.xml MCQ 6Haemorrhoids | DifficultA 60-year-old man presents with Grade IV hemorrhoids that are permanently prolapsed and cannot be reduced, causing constant discomfort and mucous discharge.What is the most appropriate definitive treatment?A. Excisional hemorrhoidectomyB. Injection sclerotherapyC. Lord's manual dilatationD. Observation onlyE. Rubber band ligationPK v\x!ppt/slides/_rels/slide13.xml.rels PK v\Ї ppt/notesSlides/notesSlide13.xml 13PK v\yv+ppt/notesSlides/_rels/notesSlide13.xml.rels PK v\*ppt/slides/slide14.xml MCQ 6 — AnswerHaemorrhoids Correct Answer: A. Excisional hemorrhoidectomyExplanationGrade IV hemorrhoids, which are permanently prolapsed and irreducible, are best managed with excisional hemorrhoidectomy, as non-excisional techniques are generally inadequate for this degree of prolapse.PK v\O!ppt/slides/_rels/slide14.xml.rels PK v\0 ppt/notesSlides/notesSlide14.xml 14PK v\?ݤ+ppt/notesSlides/_rels/notesSlide14.xml.rels PK v\@.ppt/slides/slide15.xml MCQ 7Haemorrhoids | DifficultA 38-year-old man presents within 36 hours of onset with a tense, exquisitely tender, bluish-purple lump at the anal margin that developed suddenly after straining.What is the most likely diagnosis and best initial management?A. Fistula-in-ano - seton placementB. Internal hemorrhoid prolapse - rubber band ligationC. Perianal abscess - incision and drainageD. Pilonidal abscess - excisionE. Thrombosed external hemorrhoid - excision under local anesthesia if within 48-72 hours, otherwise conservative managementPK v\*R!ppt/slides/_rels/slide15.xml.rels PK v\Qz ppt/notesSlides/notesSlide15.xml 15PK v\$Q+ppt/notesSlides/_rels/notesSlide15.xml.rels PK v\e$ppt/slides/slide16.xml MCQ 7 — AnswerHaemorrhoids Correct Answer: E. Thrombosed external hemorrhoid - excision under local anesthesia if within 48-72 hours, otherwise conservative managementExplanationA sudden, exquisitely tender, bluish-purple perianal lump is a thrombosed external hemorrhoid. If presenting within 48-72 hours, excision under local anesthesia gives rapid relief; later presentations are managed conservatively with analgesia and stool softeners as the pain naturally subsides.PK v\ !ppt/slides/_rels/slide16.xml.rels PK v\  ppt/notesSlides/notesSlide16.xml 16PK v\ y+ppt/notesSlides/_rels/notesSlide16.xml.rels PK v\s$ήOOppt/slides/slide17.xml MCQ 8Haemorrhoids | DifficultA 50-year-old man undergoes stapled hemorrhoidopexy. On the first postoperative night he develops severe pelvic pain, fever, and tachycardia disproportionate to the procedure performed.What serious complication must be excluded?A. Anal stenosisB. Hemorrhoid recurrenceC. Rectal perforation with pelvic sepsisD. Urinary retentionE. Wound infection at the perianal skinPK v\檋!ppt/slides/_rels/slide17.xml.rels PK v\r. ppt/notesSlides/notesSlide17.xml 17PK v\BI+ppt/notesSlides/_rels/notesSlide17.xml.rels PK v\ppt/slides/slide18.xml MCQ 8 — AnswerHaemorrhoids Correct Answer: C. Rectal perforation with pelvic sepsisExplanationSevere disproportionate pain, fever, and tachycardia after stapled hemorrhoidopexy are red-flag symptoms for a rare but life-threatening full-thickness rectal wall injury with pelvic sepsis, requiring urgent assessment and imaging.PK v\Yh!ppt/slides/_rels/slide18.xml.rels PK v\ ppt/notesSlides/notesSlide18.xml 18PK v\N+ppt/notesSlides/_rels/notesSlide18.xml.rels PK v\{ppt/slides/slide19.xml MCQ 9Haemorrhoids | ModerateA 65-year-old man presents with hemorrhoids and is noted to also have a chronic cough and a history of straining due to benign prostatic hyperplasia.What is the most important contributing factor to address as part of his management?A. Avoid all dietary fiberB. Encourage prolonged straining to fully empty the bowelC. Identify and manage conditions causing raised intra-abdominal pressure (chronic cough, straining from BPH)D. No lifestyle modification is necessaryE. Recommend bed restPK v\~!ppt/slides/_rels/slide19.xml.rels PK v\0[ ppt/notesSlides/notesSlide19.xml 19PK v\i+ppt/notesSlides/_rels/notesSlide19.xml.rels PK v\ETppt/slides/slide20.xml MCQ 9 — AnswerHaemorrhoids Correct Answer: C. Identify and manage conditions causing raised intra-abdominal pressure (chronic cough, straining from BPH)ExplanationHemorrhoids are exacerbated by chronic straining and raised intra-abdominal pressure; addressing contributing factors such as chronic cough and bladder outlet obstruction, alongside dietary fiber and adequate hydration, is an important part of long-term management to prevent recurrence.PK v\g_!ppt/slides/_rels/slide20.xml.rels PK v\7 ppt/notesSlides/notesSlide20.xml 20PK v\SB+ppt/notesSlides/_rels/notesSlide20.xml.rels PK v\i i ppt/slides/slide21.xml MCQ 10Haemorrhoids | ModerateA 30-year-old man presents with painless rectal bleeding. On examination in the left lateral position, internal hemorrhoids are noted at the 3, 7, and 11 o'clock positions.What is the embryological/anatomical basis for hemorrhoids occurring predominantly at these positions?A. These positions overlie the external anal sphincter onlyB. These positions correspond to the terminal branches of the superior rectal arteryC. These positions correspond to the three main branches of the inferior rectal arteryD. These positions represent areas of the anal canal lined by squamous epitheliumE. These positions represent the location of the anal glandsPK v\z!ppt/slides/_rels/slide21.xml.rels PK v\89| ppt/notesSlides/notesSlide21.xml 21PK v\HΩ+ppt/notesSlides/_rels/notesSlide21.xml.rels PK v\FDQSSppt/slides/slide22.xml MCQ 10 — AnswerHaemorrhoids Correct Answer: B. These positions correspond to the terminal branches of the superior rectal arteryExplanationPrimary internal hemorrhoids classically occur at the 3, 7, and 11 o'clock positions (in the lithotomy position) corresponding to the terminal branching pattern of the superior rectal artery, which supplies the anal cushions in these characteristic locations.PK v\dV!ppt/slides/_rels/slide22.xml.rels PK v\cQc ppt/notesSlides/notesSlide22.xml 22PK v\aeZ+ppt/notesSlides/_rels/notesSlide22.xml.rels PK v\/oG G ppt/slides/slide23.xml 10Anal Fissure10 MCQs — One Best Answer FormatPK v\A!ppt/slides/_rels/slide23.xml.rels PK v\] ppt/notesSlides/notesSlide23.xml 23PK v\ ~t+ppt/notesSlides/_rels/notesSlide23.xml.rels PK v\k|  ppt/slides/slide24.xml MCQ 11Anal Fissure | EasyA 28-year-old woman presents with severe, sharp anal pain during defecation that persists for a couple of hours afterward, along with a few drops of bright red blood on the toilet paper.What is the most likely diagnosis?A. Anal fissureB. Fistula-in-anoC. HemorrhoidsD. Perianal abscessE. Pilonidal sinusPK v\Y!ppt/slides/_rels/slide24.xml.rels PK v\`z ppt/notesSlides/notesSlide24.xml 24PK v\8+ppt/notesSlides/_rels/notesSlide24.xml.rels PK v\h8tppt/slides/slide25.xml MCQ 11 — AnswerAnal Fissure Correct Answer: A. Anal fissureExplanationSevere, sharp pain during and after defecation ('like passing glass') with minor bleeding is the classic presentation of an anal fissure, a longitudinal tear in the anal canal mucosa.PK v\̜|g!ppt/slides/_rels/slide25.xml.rels PK v\Y ppt/notesSlides/notesSlide25.xml 25PK v\#+ppt/notesSlides/_rels/notesSlide25.xml.rels PK v\ {ppt/slides/slide26.xml MCQ 12Anal Fissure | EasyOn examination of a patient with a suspected anal fissure, gentle separation of the buttocks reveals a linear tear in the anal mucosa.What is the most common location for this tear?A. Anterior midlineB. Lateral positionC. Posterior midlineD. Postero-lateral positionE. Random distribution with no preferred sitePK v\5b?!ppt/slides/_rels/slide26.xml.rels PK v\Aʑ ppt/notesSlides/notesSlide26.xml 26PK v\${+ppt/notesSlides/_rels/notesSlide26.xml.rels PK v\4B<ppt/slides/slide27.xml MCQ 12 — AnswerAnal Fissure Correct Answer: C. Posterior midlineExplanationThe vast majority of anal fissures occur in the posterior midline, attributed to the relatively poor blood supply in this region of the anal canal, making it more vulnerable to ischemia and poor healing after a tear.PK v\PG!ppt/slides/_rels/slide27.xml.rels PK v\W  ppt/notesSlides/notesSlide27.xml 27PK v\e+ppt/notesSlides/_rels/notesSlide27.xml.rels PK v\ d==ppt/slides/slide28.xml MCQ 13Anal Fissure | ModerateA 35-year-old man has had anal pain on defecation for 2 weeks. On examination, a posterior midline linear ulcer is seen with a sentinel pile at its lower end and exposed internal sphincter fibers at its base.What is this presentation classified as?A. Acute anal fissureB. Anal fistulaC. Chronic anal fissureD. Hemorrhoidal prolapseE. Rectal prolapsePK v\ [R]!ppt/slides/_rels/slide28.xml.rels PK v\\ ppt/notesSlides/notesSlide28.xml 28PK v\i+ppt/notesSlides/_rels/notesSlide28.xml.rels PK v\Јppt/slides/slide29.xml MCQ 13 — AnswerAnal Fissure Correct Answer: C. Chronic anal fissureExplanationFeatures such as a sentinel pile (skin tag at the fissure's outer edge), exposed internal sphincter fibers, and hypertrophied anal papilla at the upper end indicate a chronic anal fissure, as opposed to an acute fissure which appears as a simple superficial tear.PK v\->w!ppt/slides/_rels/slide29.xml.rels PK v\zx ppt/notesSlides/notesSlide29.xml 29PK v\(Lk+ppt/notesSlides/_rels/notesSlide29.xml.rels PK v\ppt/slides/slide30.xml MCQ 14Anal Fissure | ModerateA 30-year-old man presents with a 3-week history of an acute posterior midline anal fissure without sentinel pile formation.What is the most appropriate first-line management?A. Botulinum toxin injectionB. High-fiber diet, stool softeners, sitz baths, and topical glyceryl trinitrate or diltiazemC. Lateral internal sphincterotomyD. Manual anal dilatation under general anesthesiaE. Surgical excision of the fissurePK v\*!ppt/slides/_rels/slide30.xml.rels PK v\ q) ppt/notesSlides/notesSlide30.xml 30PK v\+ppt/notesSlides/_rels/notesSlide30.xml.rels PK v\dGppt/slides/slide31.xml MCQ 14 — AnswerAnal Fissure Correct Answer: B. High-fiber diet, stool softeners, sitz baths, and topical glyceryl trinitrate or diltiazemExplanationAcute anal fissures are managed conservatively first-line: dietary fiber and stool softeners to ease defecation, sitz baths for symptomatic relief, and topical agents (glyceryl trinitrate or calcium channel blockers like diltiazem) to relax the internal sphincter and improve blood flow, promoting healing.PK v\!ppt/slides/_rels/slide31.xml.rels PK v\ ppt/notesSlides/notesSlide31.xml 31PK v\{+ppt/notesSlides/_rels/notesSlide31.xml.rels PK v\ ppt/slides/slide32.xml MCQ 15Anal Fissure | ModerateA 40-year-old man started on topical glyceryl trinitrate for an anal fissure returns after 1 week complaining of a severe throbbing headache.What is the most likely cause of this symptom?A. Allergic reaction to the fissure cream baseB. Coincidental tension headache unrelated to treatmentC. Migraine triggered by stress of the conditionD. Side effect of glyceryl trinitrate causing vasodilationE. Sign of fissure-related sepsisPK v\;!ppt/slides/_rels/slide32.xml.rels PK v\lZ} ppt/notesSlides/notesSlide32.xml 32PK v\|+ppt/notesSlides/_rels/notesSlide32.xml.rels PK v\"p//ppt/slides/slide33.xml MCQ 15 — AnswerAnal Fissure Correct Answer: D. Side effect of glyceryl trinitrate causing vasodilationExplanationHeadache is a common and recognized side effect of topical glyceryl trinitrate, caused by its vasodilatory action being absorbed systemically; this sometimes limits patient compliance, and diltiazem cream is an alternative with fewer systemic side effects.PK v\^r!ppt/slides/_rels/slide33.xml.rels PK v\\ ppt/notesSlides/notesSlide33.xml 33PK v\=cu+ppt/notesSlides/_rels/notesSlide33.xml.rels PK v\Dppt/slides/slide34.xml MCQ 16Anal Fissure | DifficultA 45-year-old man with a chronic posterior anal fissure fails 8 weeks of topical therapy and a trial of botulinum toxin injection. Anal manometry shows elevated resting anal pressure. He has normal continence.What is the most appropriate surgical option?A. Anal advancement flapB. Excision of the fissure alone without sphincter divisionC. HemorrhoidectomyD. Lateral internal sphincterotomyE. Posterior midline sphincterotomyPK v\iC!ppt/slides/_rels/slide34.xml.rels PK v\鼀 ppt/notesSlides/notesSlide34.xml 34PK v\Ŷ+ppt/notesSlides/_rels/notesSlide34.xml.rels PK v\Hwffppt/slides/slide35.xml MCQ 16 — AnswerAnal Fissure Correct Answer: D. Lateral internal sphincterotomyExplanationFor chronic anal fissure refractory to medical therapy with confirmed elevated resting anal sphincter pressure, lateral internal sphincterotomy is the standard surgical treatment, reducing sphincter spasm and improving blood flow while avoiding the posterior 'keyhole' deformity risk associated with posterior sphincterotomy.PK v\ !ppt/slides/_rels/slide35.xml.rels PK v\Q"wG ppt/notesSlides/notesSlide35.xml 35PK v\:+ppt/notesSlides/_rels/notesSlide35.xml.rels PK v\Nppt/slides/slide36.xml MCQ 17Anal Fissure | DifficultA 30-year-old woman has a chronic anal fissure located laterally rather than in the typical midline position, and it has not responded to standard medical therapy.What underlying condition must be excluded given this atypical location?A. Crohn's disease, tuberculosis, syphilis, HIV, or anal malignancyB. Hemorrhoidal diseaseC. Hirschsprung diseaseD. Idiopathic fissure - no further investigation requiredE. Rectal prolapsePK v\!ppt/slides/_rels/slide36.xml.rels PK v\xZԑ ppt/notesSlides/notesSlide36.xml 36PK v\9z+ppt/notesSlides/_rels/notesSlide36.xml.rels PK v\*2}]]ppt/slides/slide37.xml MCQ 17 — AnswerAnal Fissure Correct Answer: A. Crohn's disease, tuberculosis, syphilis, HIV, or anal malignancyExplanationAnal fissures occurring outside the typical posterior (or less commonly anterior) midline locations should prompt investigation for an underlying secondary cause such as Crohn's disease, tuberculosis, syphilis, HIV infection, or malignancy, often requiring biopsy for confirmation.PK v\!ppt/slides/_rels/slide37.xml.rels PK v\4 ppt/notesSlides/notesSlide37.xml 37PK v\x"+ppt/notesSlides/_rels/notesSlide37.xml.rels PK v\IL L ppt/slides/slide38.xml MCQ 18Anal Fissure | DifficultA 25-year-old woman develops an anal fissure shortly after a difficult vaginal delivery with a third-degree perineal tear. The fissure is located anteriorly.What is a likely contributing factor for the anterior location in this patient?A. Anal fissures are never located anteriorly regardless of obstetric historyB. Anterior fissures are exclusively associated with malignancyC. Obstetric/childbirth-related trauma is a recognized cause of anteriorly located fissures, more common in womenD. This location indicates Crohn's disease with certaintyE. This represents a normal anatomical variant unrelated to deliveryPK v\!ppt/slides/_rels/slide38.xml.rels PK v\܈ ppt/notesSlides/notesSlide38.xml 38PK v\txu+ppt/notesSlides/_rels/notesSlide38.xml.rels PK v\;'X$ccppt/slides/slide39.xml MCQ 18 — AnswerAnal Fissure Correct Answer: C. Obstetric/childbirth-related trauma is a recognized cause of anteriorly located fissures, more common in womenExplanationWhile posterior midline fissures are most common in both sexes, anterior fissures occur more frequently in women, often related to obstetric trauma during childbirth, due to the relative weakness of the anterior anal sphincter complex in this setting.PK v\#y!ppt/slides/_rels/slide39.xml.rels PK v\NCQf ppt/notesSlides/notesSlide39.xml 39PK v\5cj+ppt/notesSlides/_rels/notesSlide39.xml.rels PK v\~Gppt/slides/slide40.xml MCQ 19Anal Fissure | ModerateA 50-year-old man undergoes lateral internal sphincterotomy for a chronic anal fissure refractory to medical therapy. He is counseled about potential complications before surgery.What is the most important complication to discuss with this patient?A. Complete loss of anal sensationB. Guaranteed recurrence within 1 yearC. Mandatory permanent colostomyD. Need for repeat surgery in all casesE. Risk of flatus or minor fecal incontinence due to sphincter divisionPK v\ !ppt/slides/_rels/slide40.xml.rels PK v\`g#q ppt/notesSlides/notesSlide40.xml 40PK v\]+ppt/notesSlides/_rels/notesSlide40.xml.rels PK v\}mmppt/slides/slide41.xml MCQ 19 — AnswerAnal Fissure Correct Answer: E. Risk of flatus or minor fecal incontinence due to sphincter divisionExplanationLateral internal sphincterotomy carries a small but recognized risk of impaired continence, ranging from minor incontinence to flatus to, less commonly, fecal soiling, due to division of part of the internal anal sphincter; this risk must be discussed and weighed against the benefits before proceeding.PK v\5ne!ppt/slides/_rels/slide41.xml.rels PK v\趑 ppt/notesSlides/notesSlide41.xml 41PK v\Fr+ppt/notesSlides/_rels/notesSlide41.xml.rels PK v\gk5! ! ppt/slides/slide42.xml MCQ 20Anal Fissure | ModerateA 38-year-old man with a chronic anal fissure is being considered for botulinum toxin injection as an alternative to topical therapy that has failed.What is the mechanism by which botulinum toxin promotes fissure healing?A. It acts as a local anesthetic to numb the areaB. It directly closes the fissure through tissue adhesionC. It increases stool bulk to reduce trauma during defecationD. It promotes formation of granulation tissue directlyE. It produces temporary chemical relaxation (paralysis) of the internal anal sphincter, reducing spasm and improving local blood flowPK v\ǿ=!ppt/slides/_rels/slide42.xml.rels PK v\% ppt/notesSlides/notesSlide42.xml 42PK v\/k+ppt/notesSlides/_rels/notesSlide42.xml.rels PK v\hTttppt/slides/slide43.xml MCQ 20 — AnswerAnal Fissure Correct Answer: E. It produces temporary chemical relaxation (paralysis) of the internal anal sphincter, reducing spasm and improving local blood flowExplanationBotulinum toxin works by causing temporary chemical denervation and relaxation of the internal anal sphincter, reducing the spasm that perpetuates ischemia at the fissure base, thereby promoting healing in patients who have failed topical therapy.PK v\:!ppt/slides/_rels/slide43.xml.rels PK v\= ppt/notesSlides/notesSlide43.xml 43PK v\npjq+ppt/notesSlides/_rels/notesSlide43.xml.rels PK v\@FI I ppt/slides/slide44.xml 10Fistula-in-Ano10 MCQs — One Best Answer FormatPK v\M!ppt/slides/_rels/slide44.xml.rels PK v\Eؑ ppt/notesSlides/notesSlide44.xml 44PK v\6+ppt/notesSlides/_rels/notesSlide44.xml.rels PK v\$  ppt/slides/slide45.xml MCQ 21Fistula-in-Ano | EasyA 35-year-old man presents with recurrent intermittent discharge of pus and blood-stained fluid near the anus, with a history of a previously drained perianal abscess at the same site.What is the most likely diagnosis?A. Anal fissureB. Fistula-in-anoC. HemorrhoidsD. Pilonidal sinusE. Rectal prolapsePK v\j !ppt/slides/_rels/slide45.xml.rels PK v\8% ppt/notesSlides/notesSlide45.xml 45PK v\-3+ppt/notesSlides/_rels/notesSlide45.xml.rels PK v\$qppt/slides/slide46.xml MCQ 21 — AnswerFistula-in-Ano Correct Answer: B. Fistula-in-anoExplanationA persistent discharging track following a previous perianal abscess is the classic history for fistula-in-ano, an abnormal communication between the anal canal and the perianal skin, most commonly arising from infection of the anal glands (cryptoglandular origin).PK v\BYT!ppt/slides/_rels/slide46.xml.rels PK v\ ppt/notesSlides/notesSlide46.xml 46PK v\j~+ppt/notesSlides/_rels/notesSlide46.xml.rels PK v\5Eݒppt/slides/slide47.xml MCQ 22Fistula-in-Ano | EasyA surgeon palpates a cord-like structure beneath the skin while examining a patient with a discharging perianal opening, attempting to trace its course toward the anal canal.What rule helps predict the internal opening's likely location based on the external opening?A. Goodsall's ruleB. Murphy's signC. Park's classification (used for tract type, not location prediction)D. Romberg's signE. Rovsing's signPK v\e<!ppt/slides/_rels/slide47.xml.rels PK v\]K ppt/notesSlides/notesSlide47.xml 47PK v\+++ppt/notesSlides/_rels/notesSlide47.xml.rels PK v\Dշ33ppt/slides/slide48.xml MCQ 22 — AnswerFistula-in-Ano Correct Answer: A. Goodsall's ruleExplanationGoodsall's rule states that fistulas with an external opening anterior to a transverse line through the anus tend to follow a straight radial course to the internal opening, while those posterior to this line tend to follow a curved course to an internal opening in the posterior midline.PK v\76!ppt/slides/_rels/slide48.xml.rels PK v\$ ppt/notesSlides/notesSlide48.xml 48PK v\'|+ppt/notesSlides/_rels/notesSlide48.xml.rels PK v\ HrIIppt/slides/slide49.xml MCQ 23Fistula-in-Ano | ModerateAn MRI of a patient with fistula-in-ano shows the tract passing through the internal sphincter into the intersphincteric space and exiting onto the perianal skin without crossing the external sphincter.What type of fistula is this according to Park's classification?A. ExtrasphinctericB. IntersphinctericC. SubmucousD. SuprasphinctericE. TranssphinctericPK v\R!ppt/slides/_rels/slide49.xml.rels PK v\'> ppt/notesSlides/notesSlide49.xml 49PK v\fn+ppt/notesSlides/_rels/notesSlide49.xml.rels PK v\Tppt/slides/slide50.xml MCQ 23 — AnswerFistula-in-Ano Correct Answer: B. IntersphinctericExplanationAn intersphincteric fistula tracks through the internal sphincter and along the intersphincteric plane to open on the perianal skin without crossing the external sphincter; this is the most common type of fistula-in-ano.PK v\A!ppt/slides/_rels/slide50.xml.rels PK v\^o ppt/notesSlides/notesSlide50.xml 50PK v\K+ppt/notesSlides/_rels/notesSlide50.xml.rels PK v\ba%%ppt/slides/slide51.xml MCQ 24Fistula-in-Ano | ModerateA 40-year-old man with a fistula-in-ano undergoes MRI which shows the tract crossing both the internal and external sphincters to pass through the ischiorectal fossa before opening on the perianal skin.What type of fistula is this?A. ExtrasphinctericB. IntersphinctericC. Low transsphinctericD. SubmucousE. SuprasphinctericPK v\;*!ppt/slides/_rels/slide51.xml.rels PK v\Q. ppt/notesSlides/notesSlide51.xml 51PK v\ǭ+ppt/notesSlides/_rels/notesSlide51.xml.rels PK v\܆ppt/slides/slide52.xml MCQ 24 — AnswerFistula-in-Ano Correct Answer: C. Low transsphinctericExplanationA transsphincteric fistula crosses both the internal and external anal sphincters to reach the ischiorectal fossa before opening externally; this is the second most common type and is further classified as high or low based on the level of sphincter involvement.PK v\W4!ppt/slides/_rels/slide52.xml.rels PK v\; ppt/notesSlides/notesSlide52.xml 52PK v\2S+ppt/notesSlides/_rels/notesSlide52.xml.rels PK v\BXppt/slides/slide53.xml MCQ 25Fistula-in-Ano | ModerateA patient with a low, simple fistula-in-ano (involving minimal sphincter muscle) is being planned for definitive surgical treatment.What is the most appropriate surgical procedure?A. Advancement flap procedure as first-line for simple low fistulasB. Fistulotomy (laying open the tract)C. LIFT procedure as first-line for simple low fistulasD. Long-term seton drainage without definitive treatmentE. Total excision of the anal sphincter complexPK v\42!ppt/slides/_rels/slide53.xml.rels PK v\4 ppt/notesSlides/notesSlide53.xml 53PK v\sp+ppt/notesSlides/_rels/notesSlide53.xml.rels PK v\Ǚb  ppt/slides/slide54.xml MCQ 25 — AnswerFistula-in-Ano Correct Answer: B. Fistulotomy (laying open the tract)ExplanationFor a low, simple fistula involving a small amount of sphincter muscle, fistulotomy (laying open the entire tract to allow healing by secondary intention) is the standard treatment, as the risk to continence is minimal given the limited sphincter involvement.PK v\C (!ppt/slides/_rels/slide54.xml.rels PK v\ |(Ƒ ppt/notesSlides/notesSlide54.xml 54PK v\ +ppt/notesSlides/_rels/notesSlide54.xml.rels PK v\W W ppt/slides/slide55.xml MCQ 26Fistula-in-Ano | DifficultA 45-year-old man has a high transsphincteric fistula involving more than one-third of the external sphincter. He is concerned about the risk of incontinence with surgery.What is the most appropriate management approach to balance cure and continence preservation?A. Excision of the entire sphincter complex with reconstructionB. Fistulotomy with primary sphincter division regardless of amount of muscle involvedC. Observation without any interventionD. Seton placement (loose or cutting) with consideration of sphincter-preserving techniques such as LIFT or advancement flapE. Simple lay-open of the tract as for a low fistulaPK v\d`,!ppt/slides/_rels/slide55.xml.rels PK v\ ppt/notesSlides/notesSlide55.xml 55PK v\І+ppt/notesSlides/_rels/notesSlide55.xml.rels PK v\|^7ppt/slides/slide56.xml MCQ 26 — AnswerFistula-in-Ano Correct Answer: D. Seton placement (loose or cutting) with consideration of sphincter-preserving techniques such as LIFT or advancement flapExplanationHigh fistulas involving a significant portion of the sphincter carry a substantial risk of incontinence if treated with simple fistulotomy. A seton (loose, to allow drainage and fibrosis, or cutting, to gradually divide the muscle) along with sphincter-preserving techniques such as the LIFT procedure or advancement flap are preferred to balance cure with continence preservation.PK v\L2!ppt/slides/_rels/slide56.xml.rels PK v\lΒ ppt/notesSlides/notesSlide56.xml 56PK v\w+ppt/notesSlides/_rels/notesSlide56.xml.rels PK v\ M:ppt/slides/slide57.xml MCQ 27Fistula-in-Ano | DifficultA 38-year-old man presents with multiple recurrent perianal fistulas, anal skin tags, and a history of intermittent bloody diarrhea and weight loss over the past year.What underlying condition must be excluded before planning definitive fistula surgery?A. Crohn's diseaseB. Hemorrhoidal diseaseC. Hidradenitis suppurativa as the sole cause without further evaluationD. Idiopathic cryptoglandular fistula without further workupE. Simple perianal abscessPK v\kp!ppt/slides/_rels/slide57.xml.rels PK v\&U ppt/notesSlides/notesSlide57.xml 57PK v\6+ppt/notesSlides/_rels/notesSlide57.xml.rels PK v\@h|Fppt/slides/slide58.xml MCQ 27 — AnswerFistula-in-Ano Correct Answer: A. Crohn's diseaseExplanationMultiple, recurrent, or complex perianal fistulas with associated bowel symptoms (bloody diarrhea, weight loss) should raise strong suspicion for Crohn's disease, which requires colonoscopic evaluation, as management principles differ significantly from idiopathic cryptoglandular fistulas, favoring more conservative drainage-based approaches over aggressive sphincter-cutting procedures.PK v\!ppt/slides/_rels/slide58.xml.rels PK v\ ppt/notesSlides/notesSlide58.xml 58PK v\:v+ppt/notesSlides/_rels/notesSlide58.xml.rels PK v\( ppt/slides/slide59.xml MCQ 28Fistula-in-Ano | DifficultDuring exploration of a fistula tract, the surgeon finds that it originates from the rectum above the level of the levator ani muscles and passes down through the levator plate to open on the perianal skin, without any relationship to the anal sphincter complex or anal glands.What type of fistula is this, and what is a common underlying cause?A. Extrasphincteric fistula - often secondary to pelvic sepsis, trauma, or Crohn's disease rather than simple cryptoglandular infectionB. Intersphincteric fistula - cryptoglandular infectionC. Low transsphincteric fistula - cryptoglandular infectionD. Submucous fistula - hemorrhoidal diseaseE. Suprasphincteric fistula - cryptoglandular infection onlyPK v\'!ppt/slides/_rels/slide59.xml.rels PK v\  ppt/notesSlides/notesSlide59.xml 59PK v\{mEo+ppt/notesSlides/_rels/notesSlide59.xml.rels PK v\wppt/slides/slide60.xml MCQ 28 — AnswerFistula-in-Ano Correct Answer: A. Extrasphincteric fistula - often secondary to pelvic sepsis, trauma, or Crohn's disease rather than simple cryptoglandular infectionExplanationAn extrasphincteric fistula passes from the rectum, above and outside the sphincter complex, through the levator muscles to the perianal skin, bypassing the anal canal and sphincters entirely. It is rare and usually secondary to causes such as pelvic inflammatory disease, Crohn's disease, trauma, or iatrogenic injury rather than simple cryptoglandular infection.PK v\O-t!ppt/slides/_rels/slide60.xml.rels PK v\&L ppt/notesSlides/notesSlide60.xml 60PK v\+ppt/notesSlides/_rels/notesSlide60.xml.rels PK v\Զppt/slides/slide61.xml MCQ 29Fistula-in-Ano | ModerateA patient undergoes examination under anesthesia for a complex fistula, during which hydrogen peroxide is injected into the external opening while the surgeon observes the anal canal with a proctoscope.What is the purpose of this maneuver?A. To assess sphincter toneB. To identify the internal opening of the fistula by observing bubbling within the anal canalC. To sterilize the tract before surgeryD. To test for anal continenceE. To treat the infection definitivelyPK v\hH!ppt/slides/_rels/slide61.xml.rels PK v\d ppt/notesSlides/notesSlide61.xml 61PK v\ּ+ppt/notesSlides/_rels/notesSlide61.xml.rels PK v\}}ppt/slides/slide62.xml MCQ 29 — AnswerFistula-in-Ano Correct Answer: B. To identify the internal opening of the fistula by observing bubbling within the anal canalExplanationInjecting hydrogen peroxide (or dilute methylene blue) through the external opening while visualizing the anal canal with a proctoscope helps identify the internal opening of the fistula by observing bubbles (or dye) emerging from the crypt, aiding accurate intraoperative mapping of the tract.PK v\@٭!ppt/slides/_rels/slide62.xml.rels PK v\CI ppt/notesSlides/notesSlide62.xml 62PK v\+ppt/notesSlides/_rels/notesSlide62.xml.rels PK v\Hppt/slides/slide63.xml MCQ 30Fistula-in-Ano | DifficultA 55-year-old man with a long-standing fistula-in-ano of 10 years' duration develops an area of induration and an everted, indurated edge around the external opening, with new onset of pain and a foul discharge.What complication should be suspected in this chronic fistula?A. Anal fissure formationB. Malignant transformation (fistula-associated carcinoma)C. Normal chronic fistula appearance requiring no further actionD. Simple recurrent abscess formationE. Thrombosed hemorrhoidPK v\g,!ppt/slides/_rels/slide63.xml.rels PK v\Nߑ ppt/notesSlides/notesSlide63.xml 63PK v\Tr+ppt/notesSlides/_rels/notesSlide63.xml.rels PK v\`Pllppt/slides/slide64.xml MCQ 30 — AnswerFistula-in-Ano Correct Answer: B. Malignant transformation (fistula-associated carcinoma)ExplanationLong-standing fistula-in-ano (typically greater than 10 years) carries a small but recognized risk of malignant transformation within the tract, presenting with induration, an everted edge, increasing pain, or a change in the nature of discharge; biopsy of the tract is warranted to exclude carcinoma in such cases.PK v\!ppt/slides/_rels/slide64.xml.rels PK v\6b ppt/notesSlides/notesSlide64.xml 64PK v\Ԡ+ppt/notesSlides/_rels/notesSlide64.xml.rels PK v\|K K ppt/slides/slide65.xml 10Perianal Abscess10 MCQs — One Best Answer FormatPK v\7!ppt/slides/_rels/slide65.xml.rels PK v\~" ppt/notesSlides/notesSlide65.xml 65PK v\X+ppt/notesSlides/_rels/notesSlide65.xml.rels PK v\ZS#!!ppt/slides/slide66.xml MCQ 31Perianal Abscess | EasyA 32-year-old man presents with a 3-day history of severe throbbing pain near the anus, worse on sitting, with a tender, fluctuant, erythematous swelling at the anal margin and low-grade fever.What is the most likely diagnosis?A. Anal fissureB. Hemorrhoidal prolapseC. Perianal abscessD. Pilonidal sinusE. Rectal prolapsePK v\!ppt/slides/_rels/slide66.xml.rels PK v\ ppt/notesSlides/notesSlide66.xml 66PK v\P}+ppt/notesSlides/_rels/notesSlide66.xml.rels PK v\gppt/slides/slide67.xml MCQ 31 — AnswerPerianal Abscess Correct Answer: C. Perianal abscessExplanationA tender, fluctuant, erythematous perianal swelling with severe pain worse on sitting and systemic signs of infection (fever) is characteristic of a perianal abscess, the most common type of anorectal abscess.PK v\8E!ppt/slides/_rels/slide67.xml.rels PK v\lOv ppt/notesSlides/notesSlide67.xml 67PK v\@+ppt/notesSlides/_rels/notesSlide67.xml.rels PK v\|ppt/slides/slide68.xml MCQ 32Perianal Abscess | EasyA perianal abscess is being explained to a medical student in terms of its origin.What is the most common underlying cause of perianal and other anorectal abscesses?A. Congenital sinus tractsB. Hidradenitis suppurativa as the most common causeC. Infection of the anal glands (cryptoglandular infection)D. Sexually transmitted infection as the most common causeE. Trauma from foreign body insertion as the most common causePK v\!ppt/slides/_rels/slide68.xml.rels PK v\WDđ ppt/notesSlides/notesSlide68.xml 68PK v\q+ppt/notesSlides/_rels/notesSlide68.xml.rels PK v\ ##ppt/slides/slide69.xml MCQ 32 — AnswerPerianal Abscess Correct Answer: C. Infection of the anal glands (cryptoglandular infection)ExplanationThe cryptoglandular theory holds that the majority of anorectal abscesses (and subsequent fistulas) arise from infection of the anal glands located at the dentate line, which then spreads into adjacent anatomical spaces to form an abscess.PK v\t'!ppt/slides/_rels/slide69.xml.rels PK v\a ppt/notesSlides/notesSlide69.xml 69PK v\\jm+ppt/notesSlides/_rels/notesSlide69.xml.rels PK v\ ppt/slides/slide70.xml MCQ 33Perianal Abscess | ModerateA patient presents with a deep-seated, poorly localized perianal pain, fever, and difficulty sitting, but with minimal external swelling or skin changes visible on inspection. Digital rectal examination reveals a tender bulge above the levator ani muscles.What type of anorectal abscess is this most consistent with?A. Intersphincteric abscessB. Ischiorectal abscessC. Perianal abscess (superficial)D. Submucous abscessE. Supralevator (pelvirectal) abscessPK v\Ai!ppt/slides/_rels/slide70.xml.rels PK v\-iR ppt/notesSlides/notesSlide70.xml 70PK v\Z +ppt/notesSlides/_rels/notesSlide70.xml.rels PK v\KKppt/slides/slide71.xml MCQ 33 — AnswerPerianal Abscess Correct Answer: E. Supralevator (pelvirectal) abscessExplanationA supralevator (pelvirectal) abscess lies above the levator ani muscles and often presents with deep pelvic or perianal pain and systemic illness with minimal external signs, as it is not superficial; it may be best appreciated on digital rectal examination or imaging rather than external inspection.PK v\fLP!ppt/slides/_rels/slide71.xml.rels PK v\梕 ppt/notesSlides/notesSlide71.xml 71PK v\A+ppt/notesSlides/_rels/notesSlide71.xml.rels PK v\ OB ppt/slides/slide72.xml MCQ 34Perianal Abscess | ModerateA 40-year-old man presents with a perianal abscess. The surgeon plans incision and drainage.What is the most appropriate principle for placement of the incision?A. A cruciate incision is always required regardless of abscess sizeB. A radial incision as close as possible to the anal verge, regardless of the abscess locationC. Incision should always be made along Goodsall's line regardless of the point of maximal fluctuanceD. Incision should be made as close to the anal margin as possible while ensuring adequate drainage, to minimize the length of any resulting fistula tractE. Incision should be made over the most distal portion of the abscess regardless of proximity to the anusPK v\NqR!ppt/slides/_rels/slide72.xml.rels PK v\༏ ppt/notesSlides/notesSlide72.xml 72PK v\l8+ppt/notesSlides/_rels/notesSlide72.xml.rels PK v\Vppt/slides/slide73.xml MCQ 34 — AnswerPerianal Abscess Correct Answer: D. Incision should be made as close to the anal margin as possible while ensuring adequate drainage, to minimize the length of any resulting fistula tractExplanationWhen draining a perianal or ischiorectal abscess, the incision should be placed as close to the anal verge as is consistent with adequate drainage, since this minimizes the potential length of any subsequent fistula tract that may form, while still ensuring the abscess cavity is fully evacuated.PK v\iw!ppt/slides/_rels/slide73.xml.rels PK v\rwD ppt/notesSlides/notesSlide73.xml 73PK v\Iws+ppt/notesSlides/_rels/notesSlide73.xml.rels PK v\V<ppt/slides/slide74.xml MCQ 35Perianal Abscess | ModerateA 35-year-old man undergoes incision and drainage of a perianal abscess. He is counseled about the likelihood of an associated complication.What proportion of patients with a drained anorectal abscess are estimated to subsequently develop a fistula-in-ano?A. Approximately 0%, since drainage alone is always curativeB. Approximately 30-50%C. Approximately 5-10%D. Approximately 90-100%, fistula formation is universalE. Exactly 25% in all reported seriesPK v\#o!ppt/slides/_rels/slide74.xml.rels PK v\O ppt/notesSlides/notesSlide74.xml 74PK v\1a+ppt/notesSlides/_rels/notesSlide74.xml.rels PK v\[hh--ppt/slides/slide75.xml MCQ 35 — AnswerPerianal Abscess Correct Answer: B. Approximately 30-50%ExplanationApproximately one-third to half of patients who undergo drainage of an anorectal abscess will go on to develop a fistula-in-ano, reflecting the underlying cryptoglandular infection that caused the abscess; patients should be counseled about this possibility and the need for follow-up.PK v\9FJ9!ppt/slides/_rels/slide75.xml.rels PK v\o< ppt/notesSlides/notesSlide75.xml 75PK v\*+ppt/notesSlides/_rels/notesSlide75.xml.rels PK v\hAppt/slides/slide76.xml MCQ 36Perianal Abscess | DifficultA 45-year-old diabetic man presents with a perianal abscess. On examination, there is extensive crepitus, rapidly spreading erythema beyond the visible abscess margin, and the patient appears systemically unwell with hypotension.What is the most important diagnosis to exclude urgently?A. Necrotizing fasciitis (Fournier's gangrene)B. Pilonidal abscessC. Simple cellulitis requiring oral antibiotics onlyD. Thrombosed hemorrhoidE. Uncomplicated perianal abscess requiring routine drainagePK v\Ta!ppt/slides/_rels/slide76.xml.rels PK v\*B ppt/notesSlides/notesSlide76.xml 76PK v\My|+ppt/notesSlides/_rels/notesSlide76.xml.rels PK v\Zppt/slides/slide77.xml MCQ 36 — AnswerPerianal Abscess Correct Answer: A. Necrotizing fasciitis (Fournier's gangrene)ExplanationCrepitus, rapidly spreading erythema beyond the abscess margin, and systemic toxicity in a diabetic patient with a perianal infection are red flags for necrotizing fasciitis of the perineum (Fournier's gangrene), a surgical emergency requiring urgent radical debridement, broad-spectrum antibiotics, and aggressive resuscitation, with high associated mortality if treatment is delayed.PK v\6q!ppt/slides/_rels/slide77.xml.rels PK v\Uh ppt/notesSlides/notesSlide77.xml 77PK v\ +ppt/notesSlides/_rels/notesSlide77.xml.rels PK v\۟ ppt/slides/slide78.xml MCQ 37Perianal Abscess | DifficultA 38-year-old man undergoes incision and drainage of a perianal abscess. At the time of drainage, a probe identifies a clear track connecting the abscess cavity to the anal canal, with minimal sphincter involvement.What is the most appropriate management of this finding at the time of initial abscess drainage?A. Always perform a formal fistulotomy at the same time as abscess drainage, regardless of sphincter involvementB. Ignore the finding entirely and proceed with drainage onlyC. In a straightforward, low fistula tract identified at the time of drainage, primary fistulotomy can be considered by an experienced surgeon, but caution is needed in complex or high tractsD. Immediately perform a colostomyE. Refer for non-surgical management with antibiotics alonePK v\d!ppt/slides/_rels/slide78.xml.rels PK v\Pnڑ ppt/notesSlides/notesSlide78.xml 78PK v\+ppt/notesSlides/_rels/notesSlide78.xml.rels PK v\ `Xkkppt/slides/slide79.xml MCQ 37 — AnswerPerianal Abscess Correct Answer: C. In a straightforward, low fistula tract identified at the time of drainage, primary fistulotomy can be considered by an experienced surgeon, but caution is needed in complex or high tractsExplanationWhen a clear, low (simple) fistula tract with minimal sphincter involvement is identified at the time of abscess drainage, an experienced surgeon may consider primary fistulotomy in the same setting; however, for complex, high, or unclear tracts, simple drainage alone (with consideration of seton placement) is safer, deferring definitive fistula treatment to a later, more controlled setting to avoid continence-threatening injury.PK v\A!ppt/slides/_rels/slide79.xml.rels PK v\¥I ppt/notesSlides/notesSlide79.xml 79PK v\A.l+ppt/notesSlides/_rels/notesSlide79.xml.rels PK v\`  ppt/slides/slide80.xml MCQ 38Perianal Abscess | DifficultA 50-year-old man presents with a horseshoe-shaped abscess tracking circumferentially through the deep postanal space, with bilateral ischiorectal fossa involvement.What is the most appropriate surgical approach?A. Antibiotics alone without drainageB. Drainage via a posterior midline incision over the deep postanal space (Hanley procedure) with counter-incisions into each ischiorectal fossa as neededC. No surgical intervention is required regardless of extentD. Single small incision over one side onlyE. Wide excision of all perianal skin circumferentiallyPK v\^23!ppt/slides/_rels/slide80.xml.rels PK v\L  ppt/notesSlides/notesSlide80.xml 80PK v\1A+ppt/notesSlides/_rels/notesSlide80.xml.rels PK v\=]ppt/slides/slide81.xml MCQ 38 — AnswerPerianal Abscess Correct Answer: B. Drainage via a posterior midline incision over the deep postanal space (Hanley procedure) with counter-incisions into each ischiorectal fossa as neededExplanationA horseshoe abscess, which tracks through the deep postanal space and can extend bilaterally into the ischiorectal fossae, requires adequate drainage of the central postanal space (classically via the Hanley approach) with counter-incisions into the ischiorectal fossae as needed to ensure all loculated areas of pus are evacuated.PK v\y!ppt/slides/_rels/slide81.xml.rels PK v\f; ppt/notesSlides/notesSlide81.xml 81PK v\pZ +ppt/notesSlides/_rels/notesSlide81.xml.rels PK v\Z ppt/slides/slide82.xml MCQ 39Perianal Abscess | ModerateA 60-year-old man with poorly controlled diabetes presents with recurrent perianal abscesses over the past year, each requiring drainage. He is referred for further evaluation.What underlying issue should be addressed alongside surgical management of recurrent abscesses?A. Glycemic control should be optimized, as poor diabetic control predisposes to recurrent and severe anorectal infectionsB. Glycemic control is irrelevant to recurrent abscess formationC. No further evaluation is needed beyond repeat drainageD. Recurrent abscesses in diabetics always indicate malignancy and require immediate biopsy onlyE. Recurrent perianal abscesses always indicate HIV infection and should prompt testing exclusivelyPK v\Q !ppt/slides/_rels/slide82.xml.rels PK v\쨑 ppt/notesSlides/notesSlide82.xml 82PK v\w+ppt/notesSlides/_rels/notesSlide82.xml.rels PK v\ppt/slides/slide83.xml MCQ 39 — AnswerPerianal Abscess Correct Answer: A. Glycemic control should be optimized, as poor diabetic control predisposes to recurrent and severe anorectal infectionsExplanationPoorly controlled diabetes mellitus is a recognized risk factor for recurrent, severe, and atypical anorectal infections due to impaired immune response and microvascular disease; optimizing glycemic control is an important adjunct to surgical management in reducing recurrence and the risk of severe complications such as necrotizing infection.PK v\v{,k!ppt/slides/_rels/slide83.xml.rels PK v\'o ppt/notesSlides/notesSlide83.xml 83PK v\lz+ppt/notesSlides/_rels/notesSlide83.xml.rels PK v\} !!ppt/slides/slide84.xml MCQ 40Perianal Abscess | ModerateA medical student is asked to differentiate between an ischiorectal abscess and a perianal abscess based on anatomical location.What is the key anatomical distinction between these two types of abscess?A. A perianal abscess is located superficially near the anal verge below the dentate line, while an ischiorectal abscess tracks laterally through the external sphincter into the larger ischiorectal fossaB. Both abscesses are located in identical anatomical spaces with no meaningful distinctionC. Ischiorectal abscesses are always larger purely due to patient body habitus, with no anatomical basisD. Perianal abscesses always require general anesthesia for drainage, while ischiorectal abscesses never doE. Perianal abscesses occur above the levator ani, while ischiorectal abscesses occur below itPK v\L4Z!ppt/slides/_rels/slide84.xml.rels PK v\>nU ppt/notesSlides/notesSlide84.xml 84PK v\t*Ǩ+ppt/notesSlides/_rels/notesSlide84.xml.rels PK v\%^^ppt/slides/slide85.xml MCQ 40 — AnswerPerianal Abscess Correct Answer: A. 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