Cystic Hodgkin's lymphoma of the thymus: computed tomography appearance.

We report a case of cystic Hodgkin's disease of the thymus that was evaluated preoperatively by computed tomography (CT). Although this is an uncommon cause of an anterior mediastinal mass, it should be considered in the differential diagnosis along with cystic thymoma and cystic treatomas, since the treatment of the these lesions is dramatically different. The CT appearance and pathology of this lesion are discussed.