Management of Residual or Recurrent Disease Following Thermal Ablation of Renal Cortical Tumors.

Management of residual or recurrent disease following thermal ablation of renal cortical tumors includes surveillance, repeat ablation, or surgical extirpation. We present a multicenter experience with regard to the management of this clinical scenario. Prospectively maintained databases were reviewed to identify 1265 patients who underwent cryoablation (CA) or radiofrequency ablation (RFA) for enhancing renal masses. Disease persistence or recurrence was classified into one of the three categories: (i) residual disease in ablation zone; (ii) recurrence in the ipsilateral renal unit; and (iii) metastatic/extra-renal disease. Seventy seven patients (6.1%) had radiographic evidence of disease persistence or recurrence at a median interval of 13.7 months (range, 1-65 months) post-ablation. Distribution of disease included 47 patients with residual disease in ablation zone, 29 with ipsilateral renal unit recurrences (all in ablation zone), and one with metastatic disease. Fourteen patients (18%) elected for surveillance, and the remaining underwent salvage ablation (n = 50), partial nephrectomy (n = 5), or radical nephrectomy (n = 8). Salvage ablation was successful in 38/50 (76%) patients, with 12 failures managed by observation (3), tertiary ablation (6), and radical nephrectomy (3). At a median follow-up of 28 months, the actuarial cancer-specific survival and overall survival in this select cohort of patients was 94.8 and 89.6%, respectively.

Journal of kidney cancer and VHL. 2020 Jun 09*** epublish ***

Justin Loloi, W Bruce Shingleton, Stephen Y Nakada, Ronald J Zagoria, Jaime Landman, Benjamin R Lee, Surena F Matin, Kamran Ahrar, Raymond J Leveillee, Jeffrey A Cadeddu, Jay D Raman

Division of Urology, Penn State Health Milton S. Hershey Medical Center, Hershey, PA, USA., Division of Urology, Augusta University, Augusta, GA, USA., Division of Urology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA., Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA., Department of Urology, University of California, Irvine Medical Center, Orange, CA, USA., Department of Urology, University of Arizona College of Medicine-Tucson, Tucson, AZ, USA., Department of Urology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA., Department of Interventional Urology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA., Bethesda Health Physician Group, Boynton Beach, FL, USA., Department of Urology, University of Texas Southwestern, Dallas, TX, USA.