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In recent years, with greater population access to imaging tests, the profile of renal neoplasia has changed, with increased diagnosis being made in the early stages (1). In this new scenario, it became necessary to popularize alternative treatment modalities to radical nephrectomy to avoid overtreatment and its possible consequences. Radical nephrectomy is associated with a higher global mortality, mainly from cardiovascular causes, due to the long-term increased loss of renal function (2). In this context, partial nephrectomy gained strength, as studies showed cancer safety similar to radical nephrectomy, associated with a greater overall survival (3). With technical advances, partial nephrectomy, which had initially been applied only to small kidney lesions, commenced in increasingly larger and more complex kidney tumors (4). Thus, there was a growing interest in partial nephrectomy based on studies proving the oncological efficacy of this technique and the gain in overall survival with nephron-sparing surgery (5). In this new era, nephrometry systems were developed to predict the feasibility of partial nephrectomy in the face of complex renal lesions. Among these, the most frequently used are the R.E.N.A.L. (radius; exophytic/endophytic; nearness; anterior/posterior; location) and P.A.D.U.A. Assessment of the complexity of renal tumors by nephrometry (R.E.N.A.L. score) with CT and MRI images versus 3D reconstruction model images