rectum

Ulcer of the polyp with inflammatory changes of the crypts.

Immunohistochemistry was positive for and CD 117 (c-kit) in the GIST. A GIST can’t be Diagnosed by H&E Gastrointestinal stromal tumor (GIST) is a mesenchymal spindle cell (70-80%) or epithelioid (20-30%) neoplasm. The diagnosis...

GISTs occur most often in the stomach (60-70%), followed by the small bowel (20-30%; ileum > jejunum > duodenum), the colon/rectum (5%), and the esophagus (5%). The majority are benign; 10-30% are malignant. The differentiation...

Digital print pattern of the colonic glands with mucus and exudate.

Colonic ulcer with purulent exudate.

Detail at higher magnification of the villi.

A tubular pattern is shown with chronic inflammation at the surface of the polyp.

There are superficial inflammation and there are not atypias.

Superficial ulceration of the polyp with purulent exudate.

Another biopsy with cryptic patern and ulceration of the surface.