[A case of malignant fibrous histiocytoma in the thymic carcinoid]

The clinical case is 68 year old woman. The patient experienced dyspnea and back pain. Chest X-ray and CT showed a large well-defined mass from the left thorax expanding to the right. The tumor, which was derived from the left lobe of thymus, was removed. Cut surface of the resected tumor showed multilobar patterns and a yellow-white portion like a wedge in a part of the tumor. Histological examinations revealed that the multilobar portion was thymic carcinoid and a yellow-white portion was malignant fibrous histiocytoma. As far as we examined, literature pertaining to such double cancers has never been reported.