Focally ulcerated colonic mucosa mildly infiltrated by lymphocytes and plasma cells with lymphoid follicles. Mucigenic cells are intact and no evidence of crypt abscesses. No evidence of atypia or malignancy.
Blleeding per rectum was found on colonoscopy to have localized hyperemia and a few tiny erosive spots in the distal rectum.
Soft tissue fragments collectively measured 0.9 cm, totally embedded.
Rectum, endoscopic biopsy: