Multiple endocrine neoplasia type 2A.

Multiple endocrine neoplasia type 2A (MEN 2A) is an autosomal dominant inherited cancer syndrome that expresses nonendocrine and endocrine tumors. Here, we describe a 42-year-old man with an initial presentation of low back pain and hypertension. Clinical assessments revealed pheochromocytoma, medullary thyroid carcinoma with bone metastasis, and parathyroid hyperplasia. MEN 2A was diagnosed, and a family history of pheochromocytoma was traced. Surgical resection of the pheochromocytoma of the adrenal gland resulted in a cure of the patient's hypertension. He received systemic chemotherapy with the "MAID" regimen (mesna, doxorubicin, ifosfamide, and dacarbazine) over three cycles of 3 weeks each, and showed a partial response.