(HealthDay News) -- Smoking increases the risk of advanced kidney cancer, researchers report.

In a new study, a team from Duke University Medical Center reviewed the cases of 845 patients who had had surgery for kidney cancer -- or renal cell carcinoma -- between 2000 and 2009. They found that current and former smokers were 1.5 to 1.6 times more likely to have advanced cancer than nonsmokers.

Heavy smoking (smoking for a longer period of time and smoking more) was associated with advanced renal cell carcinoma. Kicking the habit reduced the risk of advanced disease by 9 percent for every 10 years that a former smoker was smoke-free, the investigators found.

The findings were slated for presentation Sunday at a special press conference at the American Urological Association's annual meeting, in Washington, D.C.

Another study scheduled for presentation at the same briefing found that rates of bladder cancer did not fall along with lower rates of smoking in the United States.

The researchers examined a national database and found that lung cancer rates declined along with decreasing per capita consumption of cigarettes between 1973 and 2007, but the same type of consistent decline was not seen in bladder cancer rates. Read more...

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