[The role of esophagogastroduodenoscopy in the differential diagnosis of acute cholecystitis and acute pancreatitis in diseases of the upper gastrointestinal tract].

The examination of 411 patients with diagnosis of acute cholecystitis (AH) and pancreatitis (AP) showed that 14% of the examinees had malignant or benign affections of the upper portion of the gastrointestinal tract. AH and AP were noted to occur frequently in combination with duodenal ulcer. As for gastric ulcer, it often simulates the above diseases.