Perioperative Safety and Early Oncologic Outcomes of Salvage Irreversible Electroporation for Radiorecurrent Prostate Cancer.
Local recurrence after definitive radiotherapy for prostate cancer (PCa) remains a challenging clinical problem. Salvage irreversible electroporation (sIRE) is a non-thermal focal ablation approach with limited published evidence in the radiorecurrent setting. We report safety and early oncologic outcomes of sIRE for these patients.
We performed a retrospective review of consecutive patients undergoing sIRE at a single institution (December 2023 to June 2025). Inclusion required biopsy-confirmed intraprostatic recurrence and PSMA PET demonstrating no metastatic disease. Outcomes included perioperative morbidity, early PSA response, and post-treatment prostate MRI findings.
Eighteen patients underwent sIRE. Mean age was 73.78 ± 7.0 years. Seventeen patients were discharged on the day of surgery. Postoperative urinary morbidity included urinary tract infection in 3 patients (16.7%), urinary retention requiring limited TURP in 2 (11.1%), and new bothersome storage lower urinary tract symptoms requiring treatment in 2 (11.1%). Mean PSA decreased from 5.37 ± 2.09 ng/mL pre-IRE to 1.61 ± 1.57 ng/mL at approximately 3 months, and 2.17 ± 1.92 ng/mL at approximately 6 months. Twelve patients underwent post-IRE prostate MRI; results included post-treatment change, or ablation defect, or susceptibility artifact in most patients. One patient underwent repeat PSMA PET for a rising PSA and was found to have a PSMA-avid lung lesion consistent with metastatic disease.
Salvage IRE for radiorecurrent prostate cancer has generally manageable short-term urinary morbidity and encouraging early PSA responses, with limited utility of post-treatment MRI. A longer follow-up is needed to define durability and optimal selection.
We performed a retrospective review of consecutive patients undergoing sIRE at a single institution (December 2023 to June 2025). Inclusion required biopsy-confirmed intraprostatic recurrence and PSMA PET demonstrating no metastatic disease. Outcomes included perioperative morbidity, early PSA response, and post-treatment prostate MRI findings.
Eighteen patients underwent sIRE. Mean age was 73.78 ± 7.0 years. Seventeen patients were discharged on the day of surgery. Postoperative urinary morbidity included urinary tract infection in 3 patients (16.7%), urinary retention requiring limited TURP in 2 (11.1%), and new bothersome storage lower urinary tract symptoms requiring treatment in 2 (11.1%). Mean PSA decreased from 5.37 ± 2.09 ng/mL pre-IRE to 1.61 ± 1.57 ng/mL at approximately 3 months, and 2.17 ± 1.92 ng/mL at approximately 6 months. Twelve patients underwent post-IRE prostate MRI; results included post-treatment change, or ablation defect, or susceptibility artifact in most patients. One patient underwent repeat PSMA PET for a rising PSA and was found to have a PSMA-avid lung lesion consistent with metastatic disease.
Salvage IRE for radiorecurrent prostate cancer has generally manageable short-term urinary morbidity and encouraging early PSA responses, with limited utility of post-treatment MRI. A longer follow-up is needed to define durability and optimal selection.