Abstract
A 70-year-old woman was referred to our hospital because of early gastric cancer (lesser curvature of the antrum, 0-IIc, tub1, 15 mm) and underwent endoscopic submucosal dissection. Microscopically, the lesion was found to be confined to the mucosa, and predominantly composed of well-differentiated tubular adenocarcinoma with a micropapillary component. On immunohistochemical examination, the characteristic “inside-out pattern” of the micropapillary component was observed; thus, we diagnosed the lesion as gastric cancer with a micropapillary component. Invasive micropapillary carcinoma is a rare subtype of gastric carcinoma, and, to our knowledge, this is the first case of invasive micropapillary carcinoma of the stomach confined to the mucosa.
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H. Tanaka, Y. Baba, T. Sase, Y. Isono, S. Matsusaki, T. Saito, H. Okano, K. Mukai, T. Murata, G. Watanabe declare that they have no conflict of interest.
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Tanaka, H., Baba, Y., Sase, T. et al. Gastric intramucosal adenocarcinoma with an invasive micropapillary carcinoma component. Clin J Gastroenterol 8, 14–17 (2015). https://doi.org/10.1007/s12328-014-0541-z
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DOI: https://doi.org/10.1007/s12328-014-0541-z