Primary and secondary carcinomata with focal nodular hyperplasia in a multinodular thyroid: case report.

A patient is described whose multinodular thyroid gland was found to have a primary papillary adenocarcinoma, a metastatic renal-cell carcinoma, and focal nodular hyperplasia. To our knowledge, this is the first case report of such an unusual combination. In a patient with known malignancy elsewhere, the possibility that a recent thyroid mass may be a metastasis should be considered.