Rectal prolapse looks obvious… until the shelf exam tries to trick you with hemorrhoids, mucosal prolapse, and the wrong operation.

In this episode of Surgery Shelf Prep, Chris and Mars break down rectal prolapse step-by-step: how to identify it fast using concentric versus radial folds, why adults need colonoscopy to rule out a lead point malignancy, and how to choose the right surgery based on patient frailty. We also hit emergency management of an incarcerated prolapse, plus high-yield procedures like abdominal rectopexy, Altemeier, and Delorme. Perfect for med students who want clean algorithms and fewer missed questions.

Hemorrhoids are common and easy points—but they’re a high-yield shelf exam trap, especially when the question is really testing anatomy, rectal bleeding workup, and when to escalate treatment.

In this episode of Surgery Shelf Prep, Chris and Mars break down internal versus external hemorrhoids using the dentate line, the classic “painless dripper” versus “painful blueberry” presentations, and the stepwise management from fiber and sitz baths to rubber band ligation and excisional hemorrhoidectomy. We also cover the seventy-two-hour rule for thrombosed external hemorrhoids, when rectal bleeding needs colonoscopy, and the key distractors like rectal varices and Crohn’s disease.

Anal cancer is the classic “hemorrhoids” misdirection—and the shelf loves it. If you miss the risk factors, the lymph node drainage, or the treatment algorithm, you’ll bleed points fast.

In this episode of Surgery Shelf Prep, Chris and Mars break down the high-yield presentation, key risk factors like Human Papillomavirus and Human Immunodeficiency Virus, why the dentate line predicts inguinal node spread, and the must-know management pearl: first-line treatment is combined chemoradiation, not surgery. We also cover staging imaging, when salvage abdominoperineal resection is indicated, and the common distractors that try to trick you on exam day.

Anorectal pain with fever is a surgery shelf trap you can’t afford to miss. If the skin looks normal but the digital rectal exam is exquisitely tender, think deep abscess—then move fast.

In this episode of Surgery Shelf Prep, Chris and Mars break down perianal versus perirectal abscesses, the cryptoglandular origin at the dentate line, when imaging is actually needed, and the non-negotiable management rule: pus must be drained. We also cover who needs antibiotics, how fistula-in-ano shows up after drainage, and the key distractors that love to steal points on exams.

Ogilvie Syndrome can fool you: the colon looks obstructed, the belly is huge, but there’s no mechanical blockage. In this episode of Surgery Shelf Prep, Chris and Mars break down Acute Colonic Pseudo-Obstruction with the exact shelf-style framework you need—classic patient scenarios, key imaging findings, critical cecal diameter cutoffs, and the stepwise treatment algorithm from conservative management to neostigmine, colonoscopic decompression, and when to rush to surgery. We also cover the most testable traps, including how to quickly distinguish Ogilvie from ileus, sigmoid volvulus, and toxic megacolon.

Colonic volvulus can go from “constipated and uncomfortable” to “ruptured and crashing” fast. If you cannot instantly tell sigmoid from cecal and know the next best step, the shelf will absolutely punish you.

In this episode, Chris and Mars walk through the two big volvulus patterns you must recognize: the elderly, constipated nursing home patient with sigmoid volvulus, and the younger patient with a mobile cecum and acute onset pain from cecal volvulus. You will learn how to use demographics, imaging, and clinical stability to jump straight to the correct management pathway without getting lost in low-yield details.

Perfect for medical students prepping for the surgery shelf or Step 2, this episode focuses on pattern recognition, triage, and clean algorithms you can apply instantly on questions and on the wards.

Rectal cancer is where anatomy, oncology, and surgical decision-making all collide. In this episode, learn when to order pelvic MRI, when to give neoadjuvant chemoradiation, and when to choose Low Anterior Resection versus Abdominoperineal Resection.

Listen as Chris and Mars walk you through rectal cancer from first symptom to definitive surgery, with a tight focus on staging, local control, and those “next best step” questions that separate a passing score from a surgery shelf master.

Colon cancer is one of the highest-yield topics on the Surgery Shelf and Step 2 Clinical Knowledge – and one of the easiest places to lose points on subtle traps. This episode walks you through exactly how exam writers expect you to think, so you can move faster and more confidently on test day.

In this episode, Chris and Mars break down colon cancer from the ground up: how it presents, how to work it up, when to operate, and how to avoid the sneaky pitfalls that separate pass from honors. You will finally lock in the difference between right-sided and left-sided colon cancers (think anemia versus obstruction), understand why Streptococcus bovis bacteremia is never “just” endocarditis, and remember when CEA actually matters.

If you want colon cancer questions to feel automatic instead of stressful, this episode is your playbook. Listen in, review the algorithms, and get ready to crush every colon cancer vignette that shows up on your Surgery Shelf.