Oesophageal duplication cyst presenting as haemoptysis.

Duplications of the alimentary tract include a variety of cysts, diverticula, and tubular malformations, all believed to have embryological origin. The cysts are most commonly found in children, and the diagnosis is made in infancy in the majority of patients. We report a case of a two-and-a-half year old child, presenting with the history of repeated episodes of haematemesis. Upper GI endoscopy was unremarkable and the chest x-ray showed no pathology. Computed tomography (CT) angiogram revealed soft tissue density lesion in the right chest at the level of T6. Right thoracotomy suggested a cystic mass close to the oesophagus which was shown on histopathology to be lined with gastric mucosa consistent with oesophageal duplication cyst. To the best of our knowledge, this is the first case of its kind reported from Pakistan.