New cases:An estimated 102,480 cases of colon and 40,340 cases of rectal cancer are expected to occur in 2013. Colorectal cancer is the third most common cancer in both men and women. Colorectal cancer incidence rates have been decreasing for most of the past two decades, which has largely been attributed to increases in the use of colorectal cancer screening tests that allow for the detection and removal of colorectal polyps before they progress to cancer. From 2005 to 2009, incidence rates declined by 4.1% per year among adults 50 years of age and older, for whom screening is recommended, and increased by 1.1% per year among those younger than age 50.
Signs and symptoms HERE.
source: American Cancer Society. Cancer Facts & Figures 2013. Atlanta: American Cancer Society; 2013