The following is a summary of “Simplified PADUA REnal (SPARE) Nephrometry System can Describe the Surgical Difficulty of Renal Masses With High Accuracy Even Without 3D Renal Models,” published in the December 2022 issue of Urology by Watanabe, et al.

For a study, researchers sought to determine if a 2-dimensional (2D) model properly depicted the surgical complexity of a renal mass equivalent to that achieved using a 3-dimensional (3D) model with the Simplified PADUA REnal nephrometry system (SPARE).

Between October 2018 and May 2021, 100 patients underwent RAPN in the hospital. Patients with numerous tumors, patients who had undergone preoperative transcatheter artery embolization, and patients whose CT scans were unsuitable for assessment or the creation of 3D models were also eliminated. Using SPARE predictions from CT scans (2D-SPARE) and SPARE predictions from 3D models (3D-SPARE), they performed a retrospective study on the remaining cases. The capacity to predict the attainment of the intended surgical outcome was assessed and compared between two nephrometry scores based on the lack of positive margins, absence of ischemia, and absence of severe sequelae.

The research had a total of 87 subjects. Total score and risk categorization using 3D-SPARE were significantly different from those using 2D-SPARE (P<.05), but in terms of their areas under the curve (AUC), the scores and categorizations did not differ significantly (score, 0.763 vs. 0.742; P =.501; categorization, 0.711 vs. 0.701; P =.755).

Even without using 3D renal models, the SPARE approach was highly accurate in describing the surgical difficulties of renal tumors.

Reference: goldjournal.net/article/S0090-4295(22)00822-6/fulltext