Endoscopic features of HIV-associated GI pathology. (a, b) Esophageal candidiasis: creamy mucosal plaques, (c) esophageal ulceration, (d) duodenal giardiasis, (e) intestinal cryptosporidiosis, with granular, friable mucosa, (f) ileal lymphoid hyperplasia, (g) bacterial colitis, (h) colonic ulceration, and (i) proctitis.