Colon

Pseudomembranous Colitis (Courtesy of Dr. G. Kandel)

Ulcerative Colitis
Diffuse, erythema, friability and loss of normal vascular pattern. (Courtesy of Dr. G. Kandel)

Removal with snare. (Courtesy of Dr. G. Kandel)

Angiodysplasia (“Watermelon stomach”) usually presents as anemia, can be treated by endoscopic coagulation. (Courtesy of Dr. G. Kandel)