There is severe ulceration of rectosigmoid mucosa with reduced mucigenic cells and related dense infiltration by neutrophils and lymphocytes, amounting at crypt abscess formation in some areas. Glands show focal reparative dysplasia but no evidence of malignancy. Follow-up endoscopy and biopsy after treatment of activity is advised.
Severe circumferential erythema, congestion with ulceration, involving rectum and sigmoid Colon.
Soft tissue fragments collectively measured 1.2 cm, totally embedded.
Rectosigmoid, colonoscopic biopsy: