Gastric Signet-Ring Cell Carcinoma That Presented as an Elevated Lesion due to Fibromuscular Obliteration in the Lamina Propria

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  • Yoshitsugu Misumi
    Department of Digestive Endoscopy, Tokyo Women’s Medical University Hospital, 8-1, Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan
  • Shin Ichihara
    Department of Surgical Pathology, Sapporo-Kosei General Hospital, 8-5, Kita 3 Jouhigashi, Chu-o-ku, Sapporo, Hokkaido 060-0033, Japan
  • Kouichi Nonaka
    Department of Digestive Endoscopy, Tokyo Women’s Medical University Hospital, 8-1, Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan
  • Hiromi Onizuka
    Department of Surgical Pathology, Tokyo Women’s Medical University Hospital, 8-1, Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan
  • Yoji Nagashima
    Department of Surgical Pathology, Tokyo Women’s Medical University Hospital, 8-1, Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan
  • Matteo Neri
    editor

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<jats:p>The widespread use of Helicobacter pylori eradication therapy in recent years has reduced the H. pylori infection rate, indicating that gastric cancer cases diagnosed in the future may be H. pylori-naïve. The typical endoscopic presentation of signet-ring cell carcinoma, which accounts for the majority of H. pylori-naïve gastric cancer cases, is a discolored, flat, or depressed lesion; it is rarely presented as an elevated lesion. In this study, we treated a patient with elevated signet-ring cell carcinoma in an H. pylori-naïve stomach. Histopathological testing after endoscopic submucosal dissection showed proliferation of fibromuscular tissue in the tumor, which may have caused the formation of the elevated lesion.</jats:p>

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