Nodular thyroid disease is common. Most nodules are asymptomatic and benign
, but some are malignant. Fine needle aspiration (FNA) biopsy should be the
cornerstone of the evaluation of thyroid nodules, Radionuclide scans and o
ther imaging procedures should be considered adjunctive tests and should no
t be performed until after determination of thyroid function and results of
cytology are available. Copyright (C) 2000 by W.B. Saunders Company.