PD29-03 COMPARISON OF URINARY CONTINENCE BETWEEN RETZIUS-SPARING ROBOT-ASSISTED RADICAL PROSTATECTOMY AND CONVENTIONAL ROBOT-ASSISTED RADICAL PROSTATECTOMY: PRELIMINARY DATA FROM A PROSPECTIVE RANDOMIZED CONTROLLED STUDY

sensitivity for PSMA SPECT/CT was 70% and the specificity was 91%.On a patient-based analysis, the sensitivity was 83% and the specificity was 90%.After the surgery, prostate specific antigen(PSA) level declined in 46 patients and increased in 1 patient.During the follow-up period (range: 3-16 months), of the 14 patients who presented with pelvic metastatic lymph nodes, 12 remained biochemical response (BR) after the surgery, 1 became biochemical recurrence (BCR) following BR, and 1 never became BR.While of the 4 patients with retroperitoneal LNMs, 2 became BCR following BR, and 2 never became BR.PSMAguided sLND delayed disease progression in 5 of 6 patients and these patients experienced a decline of PSA for about half an year.CONCLUSIONS: 99mTc-PSMA SPECT/CT guided surgery in PCa patients was safe and reliable with high sensitivity and specificity.sLND may represent a more suitable approach for patients with PCa recurrence.Patients with pelvic lymph node metastasis may benefit more from PSMA SPECT/CT guided surgery than those with retroperitoneal lymph node metastasis.