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Smokers might benefit from earlier colon cancer screening
Date:2/13/2008

New evidence suggests screening for colorectal cancer, which is now recommended to begin at age 50 for most people, should start five to 10 years earlier for individuals with a significant lifetime exposure to tobacco smoke, a University of Rochester Medical Center study said.

An examination of 3,450 cases found that current smokers were diagnosed with colon cancer approximately seven years earlier than people who never smoked. The study is also one of the first to link exposure to second-hand smoke, especially early in life, with a younger age for colon cancer onset.

The article appears online in the Journal of Cancer Research and Clinical Oncology.

The message for physicians and patients is clear: When making decisions about colon cancer screening you should take into account smoking history as well as family history of disease and age, said lead author Luke J. Peppone, Ph.D., research assistant professor of Radiation Oncology at the James P. Wilmot Cancer Center at the University of Rochester.

Peppones group examined data from patients diagnosed with colorectal cancer between 1957 and 1997 at Roswell Park Cancer Institute in Buffalo. (Peppone joined the University of Rochester in 2007, coming from RPCI. Co-authors are from RPCI.)

Over the 40-year period smoking habits changed, with a decrease in the percentage of current or active smokers and an increase in the percentage of former smokers. Still, the age at colon cancer diagnosis was 6.8 years younger among current smokers and 4.3 years younger for former smokers who quit less than five years ago, the results showed. People who quit more than five years ago had no significant increased risk.

However, people who reported they began smoking as young teens (before age 17) or who smoked heavily (1 pack a day or more) were the most likely to be diagnosed with cancer much younger than their never-smoking counterparts. Past exposure to second-hand-smoke was an
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Contact: Leslie Orr
Leslie_Orr@urmc.rochester.edu
585-275-5774
University of Rochester Medical Center
Source:Eurekalert

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