Hematemesis Secondary to a Bronchogenic Cyst

A 24-year-old man with an unremarkable medical history presented to the emergency department with abdominal pain and hematemesis of 3 days' duration. His symptoms were postprandial, and each episode yielded up to half a cup of blood without clots. He denied using NSAIDs or alcohol. He had had an episode of hematemesis 2 years earlier that resolved spontaneously, for which he had not sought treatment. His vital signs were normal, and his physical examination was notable only for moderate epigastric tenderness without rebound or guarding.