The American Society for Gastrointestinal Endoscopy (ASGE) heralds the recent news of a decline in U.S. cancer deaths and incidence rates, with colorectal cancer among the top three cancers with significant declines.
ASGE, representing the specialists in colorectal cancer screening, is excited by the report showing that colorectal cancer deaths among men and women dropped 4.3 percent per year between 2002 and 2005. The incidence rate for colorectal cancer (the rate at which new cancers are diagnosed) dropped 2.8 percent per year among men and dropped 2.2 percent per year among women between 1998 and 2005.
The study, issued annually since 1998 by the American Cancer Society, the National Cancer Institute, the Centers for Disease Control and Prevention, and the North American Association of Central Cancer Registries, showed for the first time a simultaneous decline in both cancer death rates and incidence rates in men and women. Incidence rates for all cancers combined (15 most commonly diagnosed) decreased 0.8 percent per year from 1999 through 2005 for both sexes combined; rates decreased 1.8 percent per year from 2001 through 2005 for men and 0.6 percent per year from 1998 through 2005 for women. The decline in both incidence and death rates for all cancers combined is due in large part to declines in the three most common cancers among men (lung, colon/rectum, and prostate) and the two most common cancers among women (breast and colon/rectum), combined with a leveling off of lung cancer death rates among women.
The concurrent declines in colorectal cancer mortality and incidence are likely associated with preventing colorectal cancer through screening and removal of precancerous polyps, improving cancer outcomes by earlier stage diagnosis, reducing exposure to risk factors, and improving cancer treatment.