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Esophageal early basaloid squamous carcinoma with unusual narrowband imaging magnified endoscopy findings

World Journal of Gastroenterology 2014年第35期20卷 12673-12677页

作者： yugo Kai Motohiko Kato Yoshito Hayashi Tomofumi Akasaka Shinichiro Shinzaki Tsutomu Nishida Masahiko Tsujii Eiichi Morii Tetsuo Takehara Department of Gastroenterology and Hepatology Osaka University Graduate School of Medicine Department of Diagnostic Pathology Osaka University Hospital

Basaloid squamous carcinoma(BSC)is a rare variant of esophageal *** are very few reports of"early"*** we report a case of early BSC with unusual findings by narrowband imaging magnified endoscopy(NBI-ME).A 70-year-old man with a middle thoracic esophageal tumor was referred to our ***-light endoscopy revealed a reddish depressed lesion 5 mm in diameter having a subepithelial tumor-like prominence with a gentle rising ***-ME revealed irregular loop-shaped microvessels coexistent with thick irregularly branched non-looped *** staining revealed a pale brown *** performed endoscopic submucosal dissection for diagnostic *** examination showed the proliferation of basal cell-like hyperchromatic tumor cells in the lamina propria and with slight invasion into the submucosa at a depth of 320μ*** tumor cells formed solid nests and microcystic structures,containing an Alcian blue-positive mucoid *** surface was covered with squamous epithelium without cellular *** vessels were observed in the intra-epithelial papilla and thick vessels were observed around the solid nests beneath the *** on these findings together,we diagnosed the lesion as *** this case,the NBI-ME findings differed from those of typical squamous cell carcinoma in that both non-invasive cancer-like irregular loop-shaped microvessels coexisted with massively invasive cancerlike thick non-looped *** speculate that the looped and non-looped vessels observed by NBI-ME histologically corresponded to thin vessels in the intraepithelial papilla and thick vessels around the tumor nests,*** NBI-ME findings might be a feature of early esophageal BSC.

关键词： Basaloid squamous carcinoma Narrowband imaging Eso

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