Intact colonic mucosa with mild reduction in the number of mucigenic cells and moderate infiltration by lymphocytes, plasma cells and neutrophils. However, crypt abscesses are not identified. No evidence of atypical or malignant cells.
Rectal bleeding. Colonoscopy revealed left colitis.
Soft tissue fragments collectively measured 0.5 cm, totally embedded.
Colon, endoscopic biopsy: