Heavy smoking linked to cancer of advanced kidney

In a new study, a team of Duke University Medical Center examined the cases of 845 patients who had undergone surgery for cancer of the kidney - or kidney cancer - 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 during a longer period of time) and smoking more was associated with the advanced kidney cancer. The habit of kicking reduces the risk of advanced disease of 9% for all 10 years who was a former smoker without smoke, researchers have discovered.

The findings have provided for the presentation Sunday at a special press conference at the annual meeting of the American Urological Association, Washington D.C.

Another study scheduled for presentation at the same briefing found that the rate of bladder cancer were not with the United States smoking rates.

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

There may be a decrease in cancer of the bladder due to smoking, but this decrease may have compensated by other factors contributing to an increase in cancer of the bladder over the past decades, researchers at the State University of New York Upstate Medical University in Syracusesaid in an American Urological Association press release.

"These two studies pour new light on the role that smoking could have two important urological cancers," moderator of press conference, said Dr. Toby Kohler in the press release.

"For cancer of the kidney, it is true that renal tumours are detected more often these days when they are small." However, it seems that smoking give a much greater risk that the cancer may be more aggressive. Quit smoking appears to reduce the risk, "said Kohler.

"" For cancer of the bladder on the other hand, the decrease in smoking rates has not affected the impact to the same degree that she has lung cancer, which suggests that there may be other factors that are more important for the development of the disease ""He added.

Because these studies are presented at a medical meeting, the data and conclusions should be considered preliminary until published in a refereed journal.