[A case of congenital esophagobronchial fistula discovered incidentally on esophagography].

A 50-year-old man was admitted to our hospital because of an abnormal shadow, detected during an upper gastrointestinal examination. A chest radiograph showed an infiltrating shadow in the right middle lung field. A chest CT showed a fistula communicating between a bronchus (rt. B6) and the middle of the esophagus. Resection of the fistula was performed by video-assisted thoracoscopic surgery (VATS). Isolation of the fistula was straightforward, and there was no evidence of inflammation or adherent lymph nodes around it. Histologic examination of the resected specimen revealed that the fistula lumen was covered with squamous epithelium and muscularis mucosa. These findings suggested that this case could be categorized as Braimbridge type II. In this case, the chest CT showed the esophagobronchial fistula clearly, and was useful for the diagnosis.