tracheoesophageal fistula following disc battery ingestion and foreign body impaction

background: ingestion of foreign bodies may result in the formation of a tracheoesophageal fistula (tef), which causes severe morbidity in children. we describe four cases of tef, who underwent emergent surgery for repair. case presentation: in this report, we present about four patients aged between 9 months to 2.5 years, who referred due to disc battery ingestion. there were two boys and two girls. the common symptoms were cough, cyanosis, and dysphagia, choking and vomiting. the diagnosis was performed through an x-ray, barium swallow and ct scan. all batteries were impacted in the esophagus, two in upper, one in the middle, and one in lower esophagus position. all disc batteries were removed endoscopically, but had tracheoesophageal fistula (tef). all the patients underwent tef repaired surgically. there was no morbidity in four patients, but one patient developed moderate esophageal stenosis, which was repaired by staged dilatation. there was no mortality in our cases. conclusion: long-term impaction of foreign bodies may result in tracheoesophageal fistula. this complication may be seen earlier with alkaline disc batteries. removal of these foreign bodies should be followed carefully for the diagnosis and treatment of these fistulas.