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Pathology of Oro-and Hypopharyngeal Superficial Cancer Tetsuo Nemoto 1 , Yoko Tateishi 1 , Nobuaki Funata 1 , Tsuyoshi Kato 2 , Junko Fujiwara 3 , Kumiko Monma 3 , Hiroshi Kawachi 4 1Department of Pathology, Tokyo Metropolitan Komagome Hospital, Tokyo 2Department of Esophageal Surgery, Tokyo Metropolitan Komagome Hospital, Tokyo 3Department of Endoscopy, Tokyo Metropolitan Komagome Hospital, Tokyo 4Department of Pathology, Tokyo Medical and Dental University, Tokyo Keyword: 中・下咽頭癌 , 表在癌 , 肉眼型 , 上皮下浸潤 , 病理 pp.190-202
Published Date 2010/2/25
DOI https://doi.org/10.11477/mf.1403101850
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 Mucosal resection cases of superficial oro- and hypopharyngeal cancer, defined as tumor invasion is limited to subepithelial layer, are accumulating. Major macroscopic tumor type of superficial oro- and hypopharyngeal cancer is type 0-IIa and type 0-IIb follows. Almost cases with 0-I type or advanced cancer-like appearance show deep subepithelial invasion(over 1,000μm)and vascular permeation. Approximately 20% of 0-IIa lesion show subepithelial invasion. 0-IIa lesions with invasion frequently associated with shallow depressed area within the elevated lesion. Some 0-IIa lesions expand along crypt of the pharyngeal tonsil or duct of appendage. No 0-IIb cases with subepithelial invasion in our series. Some diagnostic problems such as definition of invasion and rules for measurement of distance of invasion are still remaining.


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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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