papillary renal cell carcinoma type 2papillary renal cellpapillary cell carcinomatubulopapillary renal cell carcinomapapillary renal cell cancerpapillary cellmetastatic renal cell carcinomarenal cell carcinoma metastasis sitesbilateral renal cell carcinomadiagnosis of renal cell carcinomaimmunotherapy renal cell carcinomaadvanced renal cell carcinoma