Gastrointestinal Kaposi's sarcoma on endoscopy.
A) Dark-reddish flat lesions in the esophagus. B) Chromoendoscopy with indigo carmine dye showed a polypoid nodule in the terminal ileum. C). Submucosal lesions in the rectum. D) Bulky tumor surrounding the antrum of the stomach and causing pyloric stenosis. E) Circumferential flat lesions with ulceration in the duodenum. F) Multiple nodules in the stomach.