Reversible Electrochemotherapy (ECT) as a Treatment Option for Local RCC Recurrence in Solitary Kidney.

: A 61-year-old female underwent a right radical nephrectomy and a left nephron sparing surgery in 2014 due to renal cell carcinoma. A renal cell carcinoma local recurrence, 28 mm in size, centrally located in the left kidney was treated using cryoablation in 2016. In November 2018, computed tomography (CT) scan showed three nodules (maximum size 15 × 11 mm) in the left kidney, and CT-guided needle biopsy was performed. For multifocal recurrence and the anatomical site of these three nodules, a simultaneous reversible electrochemotherapy treatment was performed in April 2019. At 6-month CT control, no evidence of residual disease was found. Electrochemotherapy could be used to treat locoregional renal cell carcinoma recurrence when other ablative techniques are not suitable. LEVEL OF EVIDENCE: Level 4, Case Report.