WBR0568
| Author | [[PageAuthor::Yazan Daaboul, M.D., (Reviewed by Alison Leibowitz [1] and Yazan Daaboul, M.D.)]] |
|---|---|
| Exam Type | ExamType::USMLE Step 1 |
| Main Category | MainCategory::Pathology |
| Sub Category | SubCategory::Gastrointestinal |
| Prompt | [[Prompt::A 27-year-old man presents to the physician's office for persistent watery diarrhea of 2 weeks duration, abdominal pain, and recent unintentional weight loss. Physical examination is remarkable for skin pallor and diffuse abdominal tenderness. Following appropriate work-up, the patient undergoes GI endoscopy that demonstrates transmural granulomatous inflammation with cobblestone mucosa and skip lesions in the small intestine. Which of the following additional findings is most likely present in this patient?]] |
| Answer A | AnswerA::Loss of haustra |
| Answer A Explanation | [[AnswerAExp::Loss of haustra is frequently observed in patients with ulcerative colitis.]] |
| Answer B | AnswerB::Sclerosing cholangitis |
| Answer B Explanation | [[AnswerBExp::Sclerosing cholangitis is a complication more frequently associated with ulcerative colitis.]] |
| Answer C | AnswerC::Pseudopolyps |
| Answer C Explanation | AnswerCExp::Pseudopolyps are a common finding in ulcerative colitis. |
| Answer D | AnswerD::Proctitis |
| Answer D Explanation | [[AnswerDExp::Proctitis may be present in Crohn's disease, but is more frequently observed in patients with ulcerative colitis.]] |
| Answer E | AnswerE::Fistulas |
| Answer E Explanation | [[AnswerEExp::Fistulas are associated with Crohn's disease.]] |
| Right Answer | RightAnswer::E |
| Explanation | [[Explanation::Inflammatory bowel disease (IBD) is classified as either Crohn's disease orulcerative colitis. Differention between the two conditions is based upon clinical symptoms, gross morphology of the GI tract, microscopic appearance, associated complications, and extraintestinal manifestations. Crohn's disease is characterized by the presence of transmural granulomatous inflammation with cobblestone mucosa and skip lesions that may manifest in virtually any part of the GI tract. Crohn's disease is associated with strictures, fistulas, perianal disease, and extraintestinal symptoms, such as migratoy polyarthritis, skin lesions, such as erythema nodosum and pyoderma gangrenosum, and kidney stones. Patients typically present with watery diarrhea, In contrast, ulcerative colitis is often characterized by continuous mucosal and submucosal inflammation that involves the the rectum. Ulcerative colitis typically demonstrates friable mucosal pseudopolyps, loss of haustra in the colon, crypt abscesses, and ulcers. Unlike Crohn's disease, ulcerative colitis is usually confined to the colon, except in the case of backwash ileitis where the distal ileum is also involved. Presence of bloody diarrhea is more common among patients with ulcerative colitis. While both diseases are associated with an increased risk in the development of colorectal cancer, ulcerative colitis poses a much greater risk than Crohn's disease. Educational Objective: Crohn's disease is characterized by transmural inflammation with a cobblestone appearance and skip lesions in the GI tract. It is associated with the formation of fistulas. |
| Approved | Approved::Yes |
| Keyword | WBRKeyword::Crohn's Disease, WBRKeyword::Inflammatory Bowel Disease, WBRKeyword::Ulcerative Colitis, WBRKeyword::Fistulas, WBRKeyword::Transmural, WBRKeyword::Inflammation, WBRKeyword::Diarrhea, WBRKeyword::Abdominal Pain, WBRKeyword::Weight Loss, WBRKeyword::Malabsorption, WBRKeyword::Stricture, WBRKeyword::Perianal Disease, WBRKeyword::Excretory System, WBRKeyword::GI Tract |
| Linked Question | Linked:: |
| Order in Linked Questions | LinkedOrder:: |