摘要: Last year, an estimated 135 000 people were newly diagnosed with colorectal cancer, and 55 of these died. This makes cancer the third most commonly second deadly in United States. The average American lifetime risk developing has been at 5%. 14 Early detection shown to decrease mortality cancer. 5-year survival rate for patients localized disease is 91%. decreases 60% regional spread 6% distant metastases. 12 These statistics have led several groups create screening guidelines clinicians follow attempt find treat early.