Abstract
Thyroid nodules may be found by palpation in 1 to 7% of the population. Brazilian and international guidelines recommend that nodes greater than 1 cm in patients with normal thyroid function, should be drained through Fine Needle Aspiration (FNA). About 65 to 80% of punctured nodules are considered benign and 5 to 15% malignant. However, between 15 and 30% are classified as indeterminate …