Fine-needle aspiration biopsy of the thyroid nodule is a procedure in which a small sample of cells is obtained from a thyroid nodule with the aid of a thin needle under ultrasound guidance.

Objective: Conventional fine-needle aspiration biopsy (FNAB) for cystic thyroid nodules (CTNs) has a high rate of nondiagnostic and false-negative results. Ultrasound-guided FNAB (UG-FNAB ...

Tests commonly ordered check levels of thyroid-stimulating hormone (TSH) and T3 and T4 hormones. Blood tests are also used to monitor thyroid cancers. Fine-needle aspiration biopsy (FNAB) is the most ...