ABCRS study guide
ABCRS · Work through your exam, one topic at a time.
The American Board of Colon and Rectal Surgery (ABCRS) certifying examination is the assessment through which surgeons who have completed an accredited colon and rectal surgery residency or fellowship demonstrate that they can practice independently as specialists. It follows the qualifying examination and is the final step toward board certification in the specialty. The ABCRS study guide has 8 sections and about 1,630 words.
01Colon and Rectal Neoplasia
Know the adenoma-carcinoma sequence and its competing serrated pathway; mismatch repair deficiency (Lynch) versus sporadic CpG island methylation. Staging drives everything: T stage by depth of wall invasion, N by number of nodes, and the prognostic weight of lymph node yield (aim ≥12).
231 words, about 1 min02Inflammatory Bowel Disease
Separate ulcerative colitis (mucosal, continuous, rectal involvement, curative proctocolectomy) from Crohn disease (transmural, skip lesions, fistulizing, recurrence after surgery). Understand the role of medical therapy escalation, biologic agents, and when surgery becomes indicated: medically refractory disease, dysplasia/cancer, stricture, toxic megacolon, hemorrhage.
217 words, about 1 min03Anorectal Disease
Master anatomy of the anal canal: dentate line, internal and external sphincters, and the cryptoglandular origin of abscess and fistula. Know the Parks classification of fistulas and the role of examination under anesthesia, seton placement, and fistulotomy only when sphincter preservation allows.
199 words, under 1 min04Pelvic Floor and Functional Disorders
Understand the physiology of continence and defecation: anal sphincter complex, puborectalis, and the rectoanal inhibitory reflex. Differentiate fecal incontinence causes (sphincter injury, neuropathy, diarrhea, rectal prolapse) and treatments from biofeedback and bulking to sacral neuromodulation and sphincter repair.
203 words, about 1 min05Trauma and Emergency Surgery
Apply damage-control principles: hemorrhage control, contamination control, temporary closure, and ICU resuscitation before definitive repair. Know indications for laparotomy in blunt and penetrating trauma, and the role of CT in stable patients.
202 words, about 1 min06Perioperative Care and Critical Care
Understand risk assessment (cardiac risk indices, frailty, nutrition), enhanced recovery pathways (ERAS), VTE prophylaxis, and perioperative antibiotic timing. Know fluid and electrolyte management, sepsis bundles, and ventilator basics.
195 words, under 1 min07Minimally Invasive and Robotic Surgery
Know laparoscopic and robotic approaches to colorectal disease, including oncologic principles: adequate margins, complete mesocolic excision, and adequate lymph node harvest. Understand ergonomics, trocar placement, and conversion indications.
192 words, under 1 min08Research, Ethics, and Professionalism
Understand study design (RCTs, cohort, case-control), bias, confounding, and the interpretation of p-values and confidence intervals. Know levels of evidence and how to appraise systematic reviews.
191 words, under 1 min