A carcinoma arising from the renal parenchyma. The incidence of renal cell carcinoma has increased by 35% from 1973 to 1991. There is a strong correlation between cigarette smoking and the development of renal cell carcinoma. The clinical presentation includes : hematuria, flank pain and a palpable lumbar mass. A high percentage of renal cell carcinomas are diagnosed when an ultrasound is performed for other purposes. Diagnostic procedures include: ultra sound, intravenous pyelography and computed tomography (CT). Radical nephrectomy is the standard intervention procedure. Renal cell carcinoma is generally considered to be resistant to radiation treatment and chemotherapy.