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HOME > Endocrinol Metab > Volume 20(3); 2005 > Article
Case Report A Case of Primary Hyperparathyroidism Caused by Cystic Parathyroid Adenoma, Diagnosed during Intra-Operative PTH Monitoring.
Hye Jin Yoo, Nan Hee Kim, Soo Yeon Park, Dong Jin Kim, Sae Jeung Yang, Ju Ri Park, Hee Young Kim, Ji A Seo, Kye Won Lee, Sin Gon Kim, Kyung Mook Choi, Jae Bok Lee, Young Seok Lee, Sei Hyun Baik, Dong Seop Choi
Endocrinology and Metabolism 2005;20(3):278-282
DOI: https://doi.org/10.3803/jkes.2005.20.3.278
Published online: June 1, 2005
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1Department of Internal Medicine, College of Medicine, Korea University, Seoul, Korea.
2Department of General Surgery, College of Medicine, Korea University, Seoul, Korea.
3Department of Pathology, College of Medicine, Korea University, Seoul, Korea.

Primary hyperparathyroidism is the most frequent cause of hypercalcemia, and its prevalence is increasing due to the routine examination of serum calcium levels. Primary hyperparathyroidims is most commonly caused by an adenoma or hyperplasia of the parathyroid gland. A cystic parathyroid adenoma is an extremely rare cause of primary hyperparathyroidism. In our case, a-79-year old female presented with lower back pain and constipation. Her serum calcium, phosphate and immunoreactive parathyroid homone levels were 15.6, 1.8mg/dL and 371.8pg/mL, respectively. Neck CT revealed a cystic mass and a contour bulging heterogeneous mass in the left inferior right thyroid gland, respectively. These mass lesions were removed, and the intra-operative parathyroid hormone levels monitored, to confirm the complete resection. After removing the left cystic mass to the inferior thyroid, the serum calcium and immunoreactive parathyroid hormone levels quickly returned to normal. We report a case of primary hyperparathyroidism, caused by a cystic parathyroid adenoma, with a brief review of the literature

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