“…Respiratory symptoms can also occur. 2,3,8,10 More rarely, respiratory distress, 2,12 and Horner's Syndrome have been reported 13 Diagnosis can be made by radiography, with a number of duplications discovered incidentally on chest X-ray. 6 Con- trast swallow is more specific, which demonstrates a double oesophagus with contrast flowing in both lumens.…”