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INCIDENCE AND EPIDEMIOLOGY
Annual incidence in the United States is about 73,820 cases with 14,770 deaths. Cigarette smoking accounts for 20–30% of cases. Risk is increased in acquired renal cystic disease. There are two familial forms: a rare autosomal dominant syndrome and von Hippel–Lindau disease. About 35% of pts with von Hippel–Lindau disease develop renal cancer. Incidence is also increased in those with tuberous sclerosis and polycystic kidney disease.