Unusual case of benign tracheo-oesophageal fistula.

Benign acquired tracheo-oesophageal fistula is an uncommon lesion. Trauma and infection have been the most common causes noted in several series.' -3 Traumatic causes include oesophagoscopy or bronchoscopy; complications of tracheostomy; and blunt, crushing, or penetrating injuries to the neck or chest. Foreign body ingestion or aspiration and lye ingestion are other reported causes.4 We have recently cared for a patient with benign tracheooesophageal fistula resulting from ingestion of a camera battery.