Superficial pT1a-DMM Barrett's Adenocarcinoma with Solid Growth Pattern and Poor Differentiation in Short-Segment Barrett's Esophagus, Report of a Case Manabu Takeuchi 1 , Atsuo Nakamura 2 , Hiroyuki Usuda 3 , Gen Watanabe 4 1Department of Gastroenterology, Nagaoka Red Cross Hospital, Nagaoka, Japan 2Department of Internal Medicine, Niigata Prefecture Yoshida Hospital, Tsubame, Japan 3Department of Pathology, Nagaoka Red Cross Hospital, Nagaoka, Japan 4Department of Pathology, Niigata Cancer Center Hospital, Niigata, Japan Keyword: 低分化 , Barrett食道 , Barrett食道腺癌 , ESD , NBI pp.227-234
Published Date 2021/2/25
DOI https://doi.org/10.11477/mf.1403202253
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 A male in his sixties undergoing conventional esophagoscopy for surveillance was found to have a shallow 8mm elevated lesion with a marginal elevation at the esophagogastric junction. Conventional endoscopy showed that this lesion had a flat surface covered with thin whitish mucus and irregular microvessels with branched and reticular patterns or a network-like pattern. The endoscopicopically resected specimen was diagnosed as a poorly differentiated adenocarcinoma invading DMM with a solid growth pattern. Although this histological type is very rare in superficial Barrett's adenocarcinoma, in the case of this lesion with an unclear surface pattern that shows a smooth surface and corkscrew-like/network-like microvessel pattern, a differential diagnosis of a poorly differentiated adenocarcinoma may be important.

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