Mediastinal thoracic duct cyst: A rare entity

Thoracic Duct Cysts (TDCs) are exceedingly rare benign masses of the posterior mediastinum. They are thought to arise from congenital or degenerative weakening in the thoracic duct wall. We bring to light an incidentally detected posterior mediastinal cystic lesion that caused dysphagia in our patient and was found to be a thoracic duct cyst.