Abstract
A case of congenital esophageal cyst in the posterior mediastinum is reported with a review of the literature. A 42-year-old woman was referred to the hospital with an abnormal mass shadow on a chest X-ray film. She had no subjective symptoms, and physical examination revealed no abnormal findings. Esophagograph showed the compression of the lower esophageal lumen. Contrast computed tomography scan showed no enhancement of the tumor. On the T1-weighted or T2-weighted MR image, the tumor was visualized as hyperintense mass. Operation was performed under a diagnosis of posterior mediastinal cyst. The excised tumor did not communiate with the trachea and bronchus, but partially owned its wall jointly with the esophagus. It was 20×20×18mm in size and a section showed a single room cyst. Histologically, the cyst wall was lined with ciliated columnar epithelium, and composed of double muscular layers without cartilage. The tumor was diagnosed as congenital esophageal cyst.
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