Double lumen esophagus: a rare complication of gastroesophageal reflux disease.

Double lumen esophagus or esophagogastric fistula is a very rare endoscopic finding. Approximately 11 cases have been reported in the past. Formation of an esophagogastric fistula is predisposed by previous esophagogastric surgery, persistent gastroesophageal reflux, esophageal ulcer or esophageal carcinoma.