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要旨 本邦14例目となる,極めてまれな食道リンパ管腫の1例を経験したので,文献的考察を加え報告する.患者は43歳,男性.下部食道に,周囲と同色調で,全体に透亮感があり軟らかい,縦走する2条の隆起性病変を認めた.NBI併用拡大内視鏡も含めた詳細観察により,表面粘膜の透明化領域の散在,その部分でのヨード不染化,透明化した粘膜領域の表層およびその深部の血管所見など,既報告にはない興味深い所見がみられ,病理組織所見との対比を含めて提示した.
Esophageal lymphangioma is extremely rare. Up to 2012, only 13 cases had been reported in Japan. They were 8 men and 6 women, aged between 32 years and 74 years. Most of the lesions were smooth, soft, and transluscent. Histologically, in 11 of 14 cases, they occupied lamina propria mucosae as well as the submucosa. We report a 43-year-old male with lymphangioma in the lower part of the esophagus, which was diagnosed after endoscopic submucosal dissection. Magnifying endoscopy with NBI revealed that the overlying mucosa became transparent in spots due to thinning of the stratified squamous epithelium. We present this case with endoscopical and pathological correlation.
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