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[A case of functioning parathyroid cyst]

K Sugimoto¹, T Umekawa, T Kurita

¹Department of Urology, Kinki University School of Medicine.

Hinyokika Kiyo. Acta Urologica Japonica

|March 7, 1998

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A rare functioning parathyroid cyst caused high calcium and PTH levels in a patient presenting with neck and joint pain. Surgical removal resolved symptoms, highlighting this unusual cause of hyperparathyroidism.

Area of Science:

Endocrinology
Surgical Pathology

Background:

Functioning parathyroid cysts are rare, often presenting with symptoms of hyperparathyroidism.
This case highlights the diagnostic challenges and successful management of such a condition.

Observation:

A 63-year-old woman presented with hypercalcemia and elevated parathyroid hormone (PTH) levels.
Imaging studies suggested a parathyroid cyst, confirmed by histopathology after surgical resection.

Findings:

The resected cyst measured 30 x 40 x 30 mm and was histopathologically diagnosed as a functioning parathyroid cyst.
Postoperative recovery was uneventful, with complete symptom resolution.

Implications:

This case adds to the limited literature on functioning parathyroid cysts, particularly in the Japanese population.

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Emphasizes the importance of considering rare parathyroid pathologies in the differential diagnosis of hyperparathyroidism.