Abstract
BACKGROUND/AIM: Some patients with renal cell carcinoma (RCC) develop early or late recurrence after surgery. However, there is no clear consensus on which patients with postoperative RCC should be treated. This study aimed to establish a biomarker for selecting patients who are at a higher risk of relapse following renal cancer surgery. PATIENTS AND METHODS: A total of 378 patients who underwent nephrectomy or partial nephrectomy for a diagnosis of RCC at our hospital were included, with a focus on pT3 cases at high risk of recurrence. Factors associated with postoperative progression, including pathological and hematological parameters, were examined. RESULTS: Sarcomatoid features, Fuhrman grade 4, and C-reactive protein-albumin-lymphocyte (CALLY) index were statistically significant predictive factors for progression-free survival after surgery (p<0.0011, p=0.0047, and p<0.0001, respectively). In the multivariate Cox proportional regression analysis, the CALLY index was the most statistically significant predictor of the risk of postoperative recurrence (p=0.0002). CONCLUSION: In addition to the existing risk factors for RCC recurrence, such as sarcomatoid features and Fuhrman grade, we propose that the CALLY index is a predictor of postoperative recurrence and that patients with a low CALLY index are good candidates for postoperative treatment. Our study may help select patients with pT3 disease with a high risk of recurrence who require postoperative treatment.