A rare case of congenital bronchoesophageal fistula in an adult

INTRODUCTION: When congenital bronchoesophageal fistulas exist without atresia of the esophagus, the diagnosis can be delayed, although symptoms may occur early following fistula development. Therefore, while they are usually found in infants, they can be extremely rarely found in adults. We herein report a rare case of bronchoesophageal fistula without atresia in an adult. CASE: An 69-year-old male presented to the outpatient clinic with a decades-long history of cough with expectoration immediately after taking food, especially liquids. Computed tomograph, esophagoscopy, and esophagography revealed the fistulous communication between the mid-esophagus and right lower lobe bronchus, with consolidation in the right lower lobe. We performed right lower lobectomy with the closure and excision of the fistula. The histopathology of the fistula revealed the mucosa to be lined by stratified squamous epithelium. There was no evidence of inflammation, granuloma, or carcinoma. CONCLUSION: In conclusion, despite the benign nature of this malformation, if left untreated, it can cause long-term debilitating respiratory symptoms associated with the fistula. Therefore, the diagnosis should be considered in the evaluation of recurrent lung infection.