As the angle between the needle and the transducer is quite small, it is advantageous to position the lesion cranial in the image ... guided fine needle aspiration biopsy (EUS-FNA) of a large ...

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 ...

In a fine needle aspiration ... needs a biopsy, they may insert the needle as they feel the area. If the doctor cannot feel the lump, they may use an ultrasound to produce an image of the inside ...