Use of the sestamibi scan to identify hyperplastic parathyroid tissue in the forearm of a patient with MEN1 syndrome.

Hyperparathyroidism is the most common presenting symptom in patients with MEN1 syndrome. Sestamibi scanning is not routinely used in the preoperative evaluation of this type of patient prior to their initial operation. It has been useful, however, in the preoperative evaluation of patients with recurrent hypercalcemia prior to reexploration. We present a case, which illustrates the application of its use during the preoperative evaluation of a patient with MEN1 syndrome and recurrent hypercalcemia.