The Value of Preoperative Needle Core Biopsy for Diagnosing Benign Lesions Among Small, Incidentally Detected Renal Masses

Abstract

We found that needle core biopsy was a safe and accurate technique for distinguishing between malignant and benign tumors in small asymptomatic incidentally detected renal masses. Biopsy of small tumors is associated with a relatively high rate of technical biopsy failure, although this may be addressed by adopting improved biopsy techniques, as discussed.