Gastritis
An abnormal endoscopic view of the stomach (ie, gastroscopy) shows severe inflammation and erosion of the stomach lining (arrows). These findings are typical of gastritis. The round, black area is the connection between the stomach and the duodenum (the pylorus).
(From MH Spiro, Clinical Gastroenterology, 4 ed, 1993, McGraw-Hill, Pl. 25; with permission of the author.)