粘膜下腫よう様の形態を示した大腸癌の１例

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  • A Case of Colorectal Cancer Presenting as Submucosal Tumor

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An 59 year-old-man admitted elsewhere for right low quadrant abdominal pain was transferred to our hospital without reacting to conservative treatment. A barium enema study and colonoscopic examination suggested the presence of a submucosal tumor in the ceacum. Biopsy was group I, but CEA was high and the large tumor was hemmorhagic necessitating right hemicolectomy. Macroscopic ally, the tumor was 9×8cm and was located in the ascending colon and ceacum. The type 3 tumor was covered with normal mucosa and a partial ulcer had formed. Pathohistologicaly, the tumor was almost entirely covered with normal mucosa, with defects of the mucosa in limited areas and the enormous mass accompanied by the abscess from ss over the mesentery. The tumor was diagnosed a modelately differenciated, si, INFγ, ly1, v1 ew (-), aw (-), ow (-), P0H0n0M (-) adenocarcinoma in stage IIIa. Large bowel cancer presenting as submucosal tumor is comparatively rare with only 42 cases reported in Japanese literature. We reported this interesting case with some bibliographical considerations on the mode of development and extension and diagnosis.

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