As of 2009, there have been approximately 120 reported cases of<unk> . In every instance except for one, the patients were positive for cell sickling. Wilms' tumor, the most common<unk>  tumor of childhood, is responsible for 6-7% of childhood cancer whereas all remaining primary<unk>  tumors (among which is included<unk>  collectively account for less than 1% of all childhood cancer and less than 10% of primary kidney tumors in childhood.
Renal medullary carcinoma
Renal medullary fibroma
Renal anaplastic sarcoma
Renal oncocytoma
Papillary renal cell carcinoma
Renal cell carcinoma
Clear cell renal cell carcinoma
Clear cell papillary renal cell carcinoma