The 4-cm Rule in Partial Nephrectomy: Analysis of Surgical Selection and Safety Using Japan's National Clinical Database.
INTRODUCTION Tumor size is a crucial prognostic factor in renal cell carcinoma (RCC). The traditional 4-cm cutoff in the tumor-node-metastasis classification was established for oncological prognosis rather than technical feasibility or perioperative safety. This study examined the relationship between tumor size, surg...