Vol.102 No.10 contentsPRACTICA OTO-RHINO-LARYNGOLOGICA
Vol. 102 No. 10 October 2009
A Case of Parathyroid Adenoma and Cyst Associated with Primary
Hyperthyroidism
Masanobu Mizuta, Kazuhiko Shoji, Atsuhito Takahashi,
Takehiro Iki and Mami Matsubara
(Tenri Hospital)
We report a rare case of parathyroid adenoma and cyst associated with primary hyperparathyroidism. A 51-year-old woman seen for elevated serum alkaline phosphatase and serum parathyroid hormone was found in ultrasonography to have a solid mass near the lower right thyroid pole and a cystic mass near the lower left pole. 99mTc-MIBI scintigraphy in the delayed phase showed uptake only in the right mass, diagnosed as parathyroid adenoma elevating parathyroid horomone. We diagnosed the left mass as a nonfunctioning parathyroid cyst. Following surgery to remove the masses, serum parathyroid hormone returned to normal levels. Histological examination confirmed our diagnosis.
Key words :parathyroid adenoma, parathyroid cyst, primary hyperparathyroidism