Diagnostic Criteria and Problems of Intramucosal Colorectal Carcinoma Motohiro Kojima 1 1Department of Pathology, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, Kashiwa, Japan Keyword: 大腸癌 , 粘膜内癌 , 病理診断 , 粘膜内浸潤癌 pp.1485-1490
Published Date 2019/10/25
DOI https://doi.org/10.11477/mf.1403201860
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 Colorectal cancer cells originate from epithelial cells within the lamina propria. Subsequently, cancer cells invade into the lamina propria, resulting in submucosal invasion. Therefore, intramucosal carcinoma restricted to the lamina propria can be divided into invasive and non-invasive types. However, there is little information regarding colorectal cancer restricted to the lamina propria, and all these lesions have been classified as pTis even in cases of invasion. Here, we present information regarding intramucosal carcinoma invading the lamina propria to share our knowledge and experience through a multi-institutional study.

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