A False-Positive Localization of a Parathyroid Adenoma With Technetium Tc 99m Sestamibi Scan Secondary to a Thyroid Follicular Carcinoma

Abstract
Using technetium Tc 99m sestamibi for localization of a parathyroid adenoma in primary hyperparathyroidism, we describe the first reported case of increased uptake due to a thyroid follicular carcinoma. Prior false-positive results have been reported exclusively with follicular adenomas. (Arch Surg. 1996;131:216-217)