Malignant triton tumor of the thyroid gland.

Abstract

A case of a malignant triton tumor, a malignant schwannoma with a rhabdomyoblastic component is described. The tumor appeared in the right thyroid gland with no relationship to a peripheral nerve. Beneath pulmonary metastases the tumor produced bone metastases and showed responsiveness to radiotherapy and treatment with ifosfamide. These findings are uncommon in malignant triton tumors.