Bajalia EM, Parikh KA, Haehn DA, et al. - Researchers intended to determine if there is a conection between excised parenchymal mass (EPM) and postoperative renal function (eGFR) following robotic-assisted partial nephrectomy (RAPN). They assessed 406 consecutive RAPN performed by a single surgeon to eliminate variations in technique as a factor in EPM. eGFR was assessed preoperatively, postoperative day 1 (POD1), 1 month, and 6 months postoperatively. Findings suggested an association of increased tumor complexity with an increase in EPM during RAPN. Increased EPM is correlated with eGFR decline at POD1 and 1 month post RAPN but not at 6 months postoperatively.