Task: Answer Verification
Input (English): Question: Is perineural invasion predictive of biochemical outcome following prostate brachytherapy?
Answer: Our results indicate that actuarial 5-year biochemical outcomes with a prostate brachytherapy approach that utilizes generous periprostatic margins is not dependent on the presence of PNI. In addition, PNI should not be used as an independent prognosticator in determining the need for combined-modality therapy in patients undergoing prostate brachytherapy.
Output (English): no