Diagnosis of parathyroid adenomas: efficacy of measuring parathormone levels in needle aspirates of cervical masses.

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Abstract
The purpose of this study was to assess the value of measuring parathormone levels in percutaneous needle aspirates of suspicious cervical lesions in patients with hyperparathyroidism to confirm whether the lesion represents abnormal parathyroid tissue.The study group consisted of 66 patients with hyperparathyroidism in whom 80 cervical lesions were aspirated and levels of parathormone in the aspirates were measured. CT guidance was used for two patients and sonographic guidance for the remainder. The lesions selected for aspiration were demonstrated on either sonography or CT and had either an unusual position (separate from the thyroid gland or were intrathyroidal) or configuration (irregular shape or atypical heterogeneous sonographic texture). In 15 patients, an indeterminate, posteriorly located intrathyroidal mass was detected and felt most likely to represent a thyroid nodule by sonographic criteria. These masses were aspirated to rule out atypical parathyroid adenomas. In patients who had been pre...

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