Abstract
A case was reported of dysgerminoma of the mediastinum. A twenty-three years old male was admitted to the hospital with a complaint of easy fatigability of four month's duration. A mass, size of fist, was found in the anterior mediastinum on chest roentgenogram.
No abnormality was noted in testes. No recurrence or metastasis have been found for four years since surgical extirpation of the mediastinal mass.
Brief review of the histogenesis of mediastinal teratoma was given and hypothesis of extragonadal germ cell (Friedman) was discussed.
