 A number of organizations have issued recommendations for colorectal cancer screening, which are presented as lists of options. Recommendations for average-risk individuals from the United States Preventative Services Task Force include either colonoscopy every 10 years, computed tomographic colonography (CTC) every 5 years, or a stool-based test every 1 to 3 years, depending on the sensitivity of the stool-based test [25]. In addition to these options, the American Cancer Society (ACS) also includes double-contrast barium enema (DCBE) every 5 years in its list of recommended screening tests [26]. The ACS guidelines also separate colorectal cancer screening tools into 2 categories: 1) those that can screen for both adenomatous polyps and cancer (CTC, colonoscopy, and DCBE); and 2) those that are intended to screen for cancer only (fecal occult blood test [FOBT], fecal immunochemical test, and stool DNA test) [26]. The ACS recommends that tests that simultaneously screen for polyps and cancers should be preferred over tests that detect cancers only when resources permit [26]. aPrincipal Author, Emory University, Atlanta, Georgia. bCo-author and Panel Chair, University of Wisconsin Hospital & Clinics, Madison, Wisconsin. cGlobal Advanced Imaging, PLLC, Little Rock, Arizona. dUniversity of South Alabama, Mobile, Alabama; American Gastroenterological Association. eNewton-Wellesley Hospital, Newton, Massachusetts. fUniversity of Texas MD Anderson Cancer Center, Houston, Texas; American College of Surgeons. gMallinckrodt Institute of Radiology, Saint Louis, Missouri. hVirginia Tech Carilion School of Medicine, Roanoke, Virginia. iMassachusetts General Hospital, Boston, Massachusetts. jUniversity of Virginia Health System, Charlottesville, Virginia. kMedstar Georgetown University Hospital, Washington, District of Columbia. lDuke University Medical Center, Durham, North Carolina. mPenn State Hershey Radiology, Hershey, Pennsylvania.
Colorectal Cancer Screening.  A number of organizations have issued recommendations for colorectal cancer screening, which are presented as lists of options. Recommendations for average-risk individuals from the United States Preventative Services Task Force include either colonoscopy every 10 years, computed tomographic colonography (CTC) every 5 years, or a stool-based test every 1 to 3 years, depending on the sensitivity of the stool-based test [25]. In addition to these options, the American Cancer Society (ACS) also includes double-contrast barium enema (DCBE) every 5 years in its list of recommended screening tests [26]. The ACS guidelines also separate colorectal cancer screening tools into 2 categories: 1) those that can screen for both adenomatous polyps and cancer (CTC, colonoscopy, and DCBE); and 2) those that are intended to screen for cancer only (fecal occult blood test [FOBT], fecal immunochemical test, and stool DNA test) [26]. The ACS recommends that tests that simultaneously screen for polyps and cancers should be preferred over tests that detect cancers only when resources permit [26]. aPrincipal Author, Emory University, Atlanta, Georgia. bCo-author and Panel Chair, University of Wisconsin Hospital & Clinics, Madison, Wisconsin. cGlobal Advanced Imaging, PLLC, Little Rock, Arizona. dUniversity of South Alabama, Mobile, Alabama; American Gastroenterological Association. eNewton-Wellesley Hospital, Newton, Massachusetts. fUniversity of Texas MD Anderson Cancer Center, Houston, Texas; American College of Surgeons. gMallinckrodt Institute of Radiology, Saint Louis, Missouri. hVirginia Tech Carilion School of Medicine, Roanoke, Virginia. iMassachusetts General Hospital, Boston, Massachusetts. jUniversity of Virginia Health System, Charlottesville, Virginia. kMedstar Georgetown University Hospital, Washington, District of Columbia. lDuke University Medical Center, Durham, North Carolina. mPenn State Hershey Radiology, Hershey, Pennsylvania.