Comparison of Renal Parenchymal Volume Preservation Between Partial Nephrectomy, Cryoablation, and Radiofrequency Ablation Using 3D Volume Measurements.

Purpose: Small renal masses (SRM) can be managed via a variety of nephron-sparing procedures (NSPs), but the association between choice of NSP and renal parenchymal volume (RPV) preservation is not well understood. We sought to examine RPV preservation after partial nephrectomy (PN) performed via open, robotic, or laparoscopic approaches and thermal ablation (TA) performed via cryoablation (CA) or radiofrequency ablation (RFA).

Patients And Methods: The study was a retrospective review of three institutional databases of patients with a SRM <4 cm treated via one of the five NSPs (open PN, laparoscopic PN, robotic PN, percutaneous CA, or percutaneous RFA).