Esophageal cyst--a case report.

Mediastinal cysts are rare and classified into thymic cysts, bronchogenic cysts, enteric cysts, pericardial cysts, lymphatic cysts and other rare types. We describe a case of foregut cyst of esophageal type in a 22 day old male infant. The CT scan showed a cystic lesion. Excised cyst was bilocular and was filled with clear fluid. Microscopically, the cyst was lined by columnar epithelium with well formed lamina propria and double layered muscularis. In view of presence of double layer of muscularis and absence of gastric glands, intestinal epithelium or cartilage, it was classified as esophageal cyst. We report this case of esophageal cyst because of its rarity.