Colon, colitis, mild, C.difficile

Colon, small colonic polyp (juvenile retention)

Ileum, small apthous ulcer with florid Crohn's colitis

Rectum, bleeding rectal carcinoid tumor

Duodenum, Brunners gland hyperplasia

Colon, melanosis coli, chronic laxative use

Colon, polyp in melanosis coli

Ileum, normal, image 1

Colon, pseudomembranous colitis, moderate