Black esophagus as an uncommon cause of gastrointestinal bleeding.

Black esophagus (BE) or Acute esophageal necrosis (AEN) is rare clinical entity with an estimated incidence of 0.01-0.2% of patiens undergoing esophagogastroduodenoscopy (EGD). BE is characterized by circumferential blackish coloration of the mucosa, with abrupt interruption at the esophagogastric junction level, secondary to hypoperfusion and ischemia. Upper gastrointestinal hemorrhage is the most common presentation (70-90%), being a rare cause of it. We present 3 cases that were admitted in our center for hematemesis.