Needle aspiration biopsy of the thyroid and parathyroid.
Aspiration biopsy is the most definitive diagnostic step in the investigation of thyroid masses. The clear fluid from the rare parathyroid cyst should be sent for parathyroid hormone assay. Guided fine-needle aspiration identifies parathyroid tumors in cases in which reexploration is necessary.
Section of Otolaryngology-Head and Neck Surgery, UMDNJ-New Jersey Medical School, Newark.
M J
MJ
Shapiro
E S
ES
Batang
D001707:Biopsy, Needle / Q000009:adverse effects / Q000379:methods; D006801:Humans; D010282:Parathyroid Neoplasms / Q000473:pathology*; D013964:Thyroid Neoplasms / Q000473:pathology*