<unk> s are often multifocal, with 30–40% of patients having more than one tumor at diagnosis. The pattern of growth of<unk> s can be papillary, sessile, or carcinoma in situ. The most common site of<unk>  metastasis outside the pelvis is bone (35%); of these, 40 percent are in the spine.
Transitional cell carcinoma
Invasive urothelial carcinoma
Collecting duct carcinoma
Clear cell renal cell carcinoma
Papillary renal cell carcinoma
Renal medullary carcinoma
Hyalinizing clear cell carcinoma
Clear cell papillary renal cell carcinoma