A Rare Cause of Upper Gastrointestinal System Bleeding: Pancreatic Endocrine Neoplasm

A 51-year-old male patient was admitted to the emergency room with the complaint of vomiting blood. There was no history of peptic ulcer and anticoagulant therapy or therapy with drugs irritating to the mucosa. He defined an abdominal pain that had spread to the back during the previous week. On physical examination he was pale, blood pressure was 90/50 mmHg, pulse rate was 100/min, and respiratory rate was 25/min. He was conscious and orientation was impaired slightly. Hematemesis and melena were determined by nasogastric intubation and rectal examination.