Renal cell carcinoma with atypical metastases sites revealed by diabetes mellitus: A case report

•Renal cell carcinoma (RCC) metastasize rarely to parietal pleura, pancreas, and contralateral kidney.•Pleural metastasis from clear cell RCC can pose differential diagnoses with metastases from chromophobe RCC.•Diabetes may be the sole manifestation of metastatic invasion of the pancreas.•Prognosis evaluation of metastatic renal cancer is based on clinical, biological and radiological characteristics.