Sections of the colonic and ileal mucosa show marked architectural distortion with crypt branching and dropout. The lamina propria contains a dense, transmucosal chronic active inflammatory infiltrate, featuring basal plasmacytosis and numerous neutrophils, associated with partial mucosal ulceration replaced by fibrino-purulent exudate and underlying granulation tissue.
A patient presenting with abdominal pain, weight loss, and markedly elevated fecal calprotectin (>2000) was found on colonoscopy to have diffuse cobblestone-like mucosa, loss of vascular pattern, and widespread fibrin-coated ulcers throughout the entire colon, strongly indicating severe inflammatory bowel disease.
Two biopsies were received:
1- Colon: soft tissue fragments collectively measured 1 cm, totally embedded.
2- Ileum: soft tissue fragments collectively measured 0.8 cm, totally embedded.
Colonic and iliac mucosal biopsies:
Comment: