Early Gastric Cancer, Type Ⅰ (Pedunculated Polypoid Cancer), Associated with Multiple Hyperplastic Polyps of the Stomach, Report of a Case Kin'ichi Yokota 1,2 , Yutaka Orii 1 , Junji Fujisawa 3 , Kiyoshi Okamura 4 , Masayoshi Namiki 4 1Department of Internal Medicine, Asahikawa Kosei Hospital 3Department of Surgery, Asahikawa Kosei Hospital 4The Third Department of Internal Medicine, Asahikawa Medical College pp.791-797
Published Date 1986/7/25
DOI https://doi.org/10.11477/mf.1403110362
  • Abstract
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 In general, pedunculated polyps of less than 20mm diameter in the stomach are histologically, usually hyperplastic. However, there is a polypoid cancer which resembles a hyperplastic polyp. In the case reported here, polypoid cancer was associated with benign multiple gastric polyps. And it was indistinguishable from those.

 A 65 year-old woman was admitted to our hospital for a further check up of multiple gastric polyps. X-ray and endoscopic examination (Fig.1-4) demonstrated nine polyps in the antrum of the stomach. Papillary adenocarcinoma was confirmed by biopsy from one polypoid lesion (No.8). This lesion which resembled a benign hyperplastic polyp, was pedunculated and 16 mm in diameter. However, on biopsy, compared with other polyps, this lesion was harder and more dark-reddish in color than the others (Fig.3-4). Pathohistological findings revealed papillary adenocarcinoma involving the mucosal layer with a villo-tubular pattern without lymph node metastasis (Fig.5,7). The muscularis mucosae of the polyp (No.8) was omega-shaped and proved to be a polypoid cancer (not polypogenic cancer) whereas the other eight polyps were all hyperplastic polyps (Fig.6 a-d).

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