Perianal manifestations are a distinguishing feature of which inflammatory bowel disease?

Perianal manifestations are a distinguishing feature of which inflammatory bowel disease?

• A. Ulcerative colitis
• B. Crohn's disease
• C. Celiac disease
• D. Irritable bowel syndrome

Answer: (B)

Perianal disease arises from the full-thickness, segmental inflammation characteristic of Crohn's disease, which can create fistulas, fissures, and abscesses around the anal area. This transmural involvement explains why perianal manifestations are a distinguishing feature of Crohn's among inflammatory bowel diseases. Ulcerative colitis, by contrast, involves only the mucosa and submucosa of the colon/rectum with continuous disease and rarely presents with perianal fistulas or abscesses. Celiac disease and irritable bowel syndrome do not typically cause these perianal inflammatory lesions.

Perianal disease arises from the full-thickness, segmental inflammation characteristic of Crohn's disease, which can create fistulas, fissures, and abscesses around the anal area. This transmural involvement explains why perianal manifestations are a distinguishing feature of Crohn's among inflammatory bowel diseases. Ulcerative colitis, by contrast, involves only the mucosa and submucosa of the colon/rectum with continuous disease and rarely presents with perianal fistulas or abscesses. Celiac disease and irritable bowel syndrome do not typically cause these perianal inflammatory lesions.