Renal core biopsy and fine-needle aspiration can provide essential information for treatment decision-making and should therefore be considered in the diagnostic work-up of all small renal masses.

Another method for treating renal cysts and/or performing a renal biopsy is placing a needle through the skin into the cyst and/or kidney using the help of x-rays. In theory, this procedure is less ...

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 ...