Endocardial metastases of follicular thyroid carcinoma: a case report and review of the literature.

An 87-year-old woman with follicular carcinoma of the thyroid gland is described, who developed ventricular tachycardia (VT) with loss of consciousness. The patient had developed widespread metastatic follicular carcinoma and succumbed to her disease. At autopsy, intracardiac metastases were found and were documented to be of thyroidal origin by the presence of thyroglobulin, using immunohistological staining techniques, using a specific antithyroglobulin antibody.