Primary Esophageal Basaloid Squamous Carcinoma, Report of a Case Manabu Takeuchi 1 , Gen Watanabe 2 , Masaaki Kobayashi 3 , Satoru Hashimoto 3 , Ken-ichi Mizuno 3 , Yuichi Sato 1 , Yoichi Ajioka 2 , Yutaka Aoyagi 1 1Department of Gastroenterology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan 2Division of Molecular and Diagnostic Pathology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan 3Department of Endoscopy, Niigata University Medical and Dental Hospital, Niigata, Japan Keyword: 食道癌 , 基底扁平上皮細胞癌(BSC) , 隆起型 , NBI , 特殊組織型 pp.355-361
Published Date 2013/3/25
DOI https://doi.org/10.11477/mf.1403113750
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 The patient was a male in his fifties. Conventional esophagoscopy revealed a red flat lesion, about 7cm in size located at the middle thoracic esophagus with a whitish elevated tumor. The protruded lesion arose gently and had a granular/nodular surface pattern covered with normal mucosa. NBI magnified endoscopy revealed irregular-branched and slightly dilated non-loop vessels which have a poor caliber change in vessels. EUS(IDUS, 20MHz)showed a hypo echoic mass lesion invading to the SM2~3. Because of the submucosal tumor-like protruded lesion with the granular/nodular surface pattern showing a vascular pattern similar to type 4R largely covered with non-neoplastic epithelium, the tumor was diagnosed as non-squamous cell carcinoma, especially basaloid squamous carcinoma or adenosquamous carcinoma. Video-Assisted Thoracic Surgery for the Esophagus with three-field lymph node dissection was performed. Histologically, the tumor was diagnosed as basaloid squamous carcinoma(pSM2)with squamous cell carcinoma(pEP/LPM), INFb, ly0, v0, pPM0, pDM0, pRM0, SMT-like, 27×20mm, N0.

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