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.
Hyperemic and edematous mucosa of sigmoid and rectum.
Soft tissue fragments collectively measured 1 cm, totally embedded.
Rectosigmoid, colonoscopic biopsy: