Screening and surveillance of colorectal cancer.
Although colorectal cancer (CRC) is the second leading cause of cancer deaths in the United States, it is preventable. Screening modalities include fecal occult blood testing, flexible sigmoidoscopy, double-contrast barium enema, and colonoscopy. Colonoscopy allows effective detection and removal of precursor adenomatous polyps and is the dominant CRC screening modality. Emerging technologies include CT and MR colonography and fecal DNA tests. Effective and cost-effective surveillance after polypectomy and curative CRC resection requires balancing the protective effect of polypectomy while maximizing intervals between examinations; thus, estimation of the risk of recurrence determines the intensity of surveillance for individual patients.
Indiana University School of Medicine, Roudebush VA Medical Center, Indianapolis, 46202, USA.
Charles J
CJ
Kahi
Douglas K
DK
Rex
D003113:Colonoscopy / Q000379:methods; D015179:Colorectal Neoplasms / Q000175:diagnosis* / Q000453:epidemiology*; D019160:Endosonography; D006801:Humans; D015994:Incidence; D008403:Mass Screening / Q000379:methods; D011159:Population Surveillance; D015996:Survival Rate; D014481:United States / Q000453:epidemiology