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.

Endoscopic ultrasound-guided fine needle aspiration biopsy (EUS-FNA) is currently performed on a routine basis at many endoscopic centers and it is evident that this procedure has a major impact ...

A doctor may recommend a biopsy to investigate ... a doctor will use a hollow needle. For others, a doctor will make an incision in the skin. In a fine needle aspiration, a doctor uses a thin ...

If the evaluation is nondiagnostic, either aspiration should be reattempted or core-needle or excisional biopsy should be performed ... a sliding inner hollow coaxial cutter, a so-called knockout ...