Excised Parenchymal Mass during Partial Nephrectomy: Functional Implications

Abstract Objective To evaluate whether excised parenchymal mass (EPM) during partial nephrectomy (PN) correlates with functional decline and can serve as a surrogate for functional outcomes. Materials And Methods All 215 patients managed with PN for unifocal renal mass with necessary studies to determine EPM and percent glomerular filtration rate (GFR) and parenchymal mass preserved (both global and specific to the operated kidney) were analyzed. EPM was estimated from the pathologic specimen by subtracting the tumor mass from specimen mass, with both calculated using the elliptical formula. Vascularized parenchymal mass preserved was measured from CT scans obtained