Cystic parathyroid adenoma within a multinodular goiter: A rare cause of primary hyperparathyroidism

Journal of Clinical Ultrasound (Impact Factor: 0.69). 05/2008; 36(4):243 - 246. DOI: 10.1002/jcu.20437


Parathyroid cysts are uncommon lesions that do not have a specific sonographic appearance. We report a rare case of a functionally active cystic parathyroid adenoma as a cause of primary hyperparathyroidism and discuss the difficulties associated with the diagnosis. In this case, the association with a multinodular goiter made preoperative differentiation from thyroid cysts difficult. Demonstration of a high intact parathyroid hormone level in the aspirated cyst fluid was critical for the correct diagnosis. © 2007 Wiley Periodicals, Inc. J Clin Ultrasound, 2008

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