Functional Parathyroid Cyst.
- Author:
Jong Ho YOON
1
;
Hang Seok CHANG
;
Woung Youn CHUNG
;
Tae Seung KIM
;
Young Nyun PARK
;
Cheong Soo PARK
Author Information
1. Department of Surgery, Yonsei University College of Medicine, Seoul, Korea.ysurg@yumc.yonsei.ac.kr
- Publication Type:Case Report
- Keywords:
Functional parathyroid cyst;
Hypercalcemia;
Parathyroid hormone
- MeSH:
Biopsy, Fine-Needle;
Calcium;
Hypercalcemia;
Mediastinum;
Neck;
Parathyroid Hormone;
Thyroid Nodule
- From:Journal of the Korean Surgical Society
2004;66(3):243-247
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Parathyroid cysts are uncommon lesions of the neck and superior mediastinum, rarely large enough to be of clinical significance. They frequently present as a clinical diagnostic problem. They may mimic solitary thyroid nodule. They can be classified as either functioning or non-functioning depending on whether or not they are associated with hypercalcemia. Non-functioning or "true" cysts are those associated with normocalcemia (85%), whereas functioning or "pseudocysts" are those associated with hypercalcemia (15%). The presence of a high content of intact parathyroid hormone (iPTH) in the cystic fluid on fine-needle aspiration (FNA), in conjunction with elevated serum levels of calcium and iPTH is diagnostic of a functional parathyroid cyst, which usually requires surgical removal. We report herein two cases of such a functional parathyroid cyst and present a review of the literature.
