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National Program of Cancer Registries - page 15 / 93

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Colon and Rectum Histologies

  • 95 percent of cases are adenocarcinoma*

    • ICD-O-3 codes 814-838

      • 8140/3 adenocarcinoma

      • 8210/3 adenocarcinoma in adenomatous polyp

      • 8220/3 adenocarcinoma in adenomatous polyposis coli

      • 8261/3 adenocarcinoma in villous adenoma

*Per Colorectal Cancer Facts & Figures Special Edition 2005; American Cancer Society

According to the American Cancer Society publication, Colorectal Cancer Facts & Figures Special Edition 2005, the histology of 95% of colon/rectum cancer cases is adenocarcinoma. According to ICD-O-3, histology with the first 3 digits 814 through 838 is classified as adenoma and adenocarcinoma. Common histology for colon and rectum that is categorized as adenocarcinoma includes adenocarcinoma, NOS, adenocarcinoma in adenomatous polyp, adenocarcinoma in adenomatous polyposis coli, and adenocarcinoma in villous adenoma.

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