The two bean-shaped organs located behind the abdominal organs might get affected by cancerous cells. It is considered to be one of the common types of cancer that occur for both men and women. In adults, kidney cancer is termed to be renal carcinoma. Signs Kidney cancers patients report no complaints in the initial stages. As tumor advances some of the following signs and symptoms maybe noted as: Blood in the urine Pain on the back Lump on the back Fever Sudden weight loss Loss of appetite Tiredness Causes The cause of kidney cancer is not clearly defined, but the following r