Task: Answer Verification
Input (English): Question: Is number of positive preoperative biopsy cores a predictor of positive surgical margins ( PSM ) in small prostates after robot-assisted radical prostatectomy ( RARP )?
Answer: A preoperative biopsy with ≥3 positive cores in men with small prostates predicts PSM after RARP. In small prostates with PSM, a PSA level of >20 ng/dL is a predictor of BCR. These factors should guide the choice of therapy and indicate the need for closer postoperative follow-up.
Output (English): yes