Prognostic Significance of Pre- to Postoperative Dynamics of the Prognostic Nutritional Index for Patients with Renal Cell Carcinoma Who Underwent Radical Nephrectomy.

Background: This study aimed to examine the prognostic role of Prognostic Nutritional Index (PNI) dynamics in the pre- and postoperative periods for patients with renal cell carcinoma (RCC) who undergo radical nephrectomy (RN).

Methods: The study analyzed 324 patients with RCC who underwent RN. The overall population was classified into four groups according to four types of pre- to postoperative PNI dynamics as follows: group 1 (low → low PNI), group 2 (low → high PNI), group 3 (high → low PNI), and group 4 (high → high PNI).