Abstract
Two cases of intrathyroidal parathyroid tumors are presented.
Case 1: A 62-year-old female had hyperparathyroidism and a solid cystic mass in the right side of her thyroid gland. CT and MRI scans did not reveal a parathyroid mass, but an uptake in the mass was recognized by 99mTc-MIBI scintigraphy. A parathyroid hormone (PTH) assay of the intrathyroidal mass examined by fine-needle aspiration biopsy (FNA) was performed. The PTH determination was 2, 400, 000pg/ml.
Case 2: A 77-year-old female had hyperparathyroidism and a huge cystic mass in the right anterior area of her neck. A PTH assay of this cystic mass examined by FNA was performed. The PTH determination was 2, 200, 000pg/ml. The surgical and pathological findings revealed that the mass was surrounded by ring-shaped thyroid tissue at the caudal portion.
The importance of FNA in the diagnosis of a parathyroid tumor is discussed.
