Overestimation of the Depth of Invasion in Colorectal Cancer, Report of a Case Yutaka J. Kawamura 1 , Masahiro Ohta 2 , Kazutomo Togashi 3 , Masako Sakuragi 1 , Jun-ichi Sasaki 1 1Department of Surgery, Omiya Medical Center, Jichi Medical School 2Department of Pathology, Omiya Medical Center, Jichi Mediacal School 3Department of Endoscopy, Jichi Medical School Keyword: 深達度 , リンパ節転移 , 早期大腸癌 , 線維化 pp.1425-1428
Published Date 2004/9/25
DOI https://doi.org/10.11477/mf.1403100575
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 Submucosally invasive colorectal cancer is associated with a risk of nodal involvement. The depth of invasion is one of the known risk factors for nodal metastasis. The assessment of the depth of invasion is made by means of conventional colonoscopy, magnifying chromoendoscopy and endoscopic ultrasonography. However, the findings obtained by these modalities are sometimes inconsistent with each other. Here we report a case with sigmoid colon carcinoma confined to the mucosa, for which the assessment of the depth of invasion was overestimated. Submucosal fibrosis is thought to bias the findings of conventional as well as of magnifying colonoscopy.

 1) Department of Surgery,Omiya Medical Center, Jichi Medical School, Saitama, Japan

 2) Department of Pathology,Omiya Medical Center, Jichi Mediacal School, Saitama, Japan

 3) Department of Endoscopy, Jichi Medical School, Tochigi, Japan

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