What's the most prevalent form of cancer among north americans?

Many are prevalent.: There are many forms of cancer prevalent in north america. Prostate is most common in men followed by lung and colon, while breast seems to be number one in women closely followed by lung and colon. Because lung and colon are seen commonly in men and women, lung is the most common/prevalent, followed by colorectal cancer. With the fall of smoking, lung is on the decrease in the United States.

Prostate cancer: Note this is usa only data cancer facts and figures 2012 (www.Cancer.Org) 241, 740 prostate 226, 870 breast 226, 160 lung and bronchus (men and women) canadian data may change these numbers from a truly "north american" perspective.