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  • Title: Colorectal cancer screening: is one-year surveillance sigmoidoscopy necessary?
    Author: Brint SL, DiPalma JA, Herrera JL.
    Journal: Am J Gastroenterol; 1993 Dec; 88(12):2019-21. PubMed ID: 8249966.
    Abstract:
    OBJECTIVES: To assess the diagnostic yield of the 1-yr follow-up flexible sigmoidoscopy examination for the detection of colonic neoplasia in a colorectal cancer screening program. METHODS: Data were prospectively collected for flexible sigmoidoscopies performed between July 1991 and July 1992 as part of the University of South Alabama Colon Cancer Registry. RESULTS: A total of 217 subjects with an age-related risk of colon carcinoma and no evidence of occult blood by stool examination were enrolled. One hundred and sixteen underwent initial sigmoidoscopic examination, and 101 had a 1-yr surveillance examination. Ten of the 116 patients (8.6%) undergoing initial surveillance sigmoidoscopy were found to have neoplastic lesions. In contrast, only 1/101 (1%) patients undergoing 1-yr follow-up surveillance sigmoidoscopy was found to have a neoplastic lesion. Neoplastic lesions in both groups were adenomas. No carcinomas were found. CONCLUSIONS: These data suggest that the 1-yr surveillance sigmoidoscopy adds little to the diagnostic yield of colon cancer screening.
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