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A gastric submucosal tumor showing unique morphological changes
  1. Daisuke Murakami,
  2. Hideaki Harada,
  3. Yuji Amano
  1. Department of Gastroenterology, New Tokyo Hospital, Matsudo-shi, Japan
  1. Correspondence to Dr Daisuke Murakami, Department of Gastroenterology, New Tokyo Hospital, Matsudo-shi 270-2232, Japan; daisuke.murakami{at}

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An asymptomatic 38-year-old man was endoscopically followed because of a gastric submucosal tumor (SMT) showing a positive cushion sign in the greater curvature of the gastric antrum. The mucosal surface of SMT dramatically changed from normal to red color, whereas with a normal micro-surface pattern (figures 1 and 2). The lesion was harder with poorer mobility. The biopsy samples revealed hyperplastic and hyperemic changes without malignant findings. He had no subjective symptoms or abnormal blood test. Contrast-enhanced computed tomography revealed the SMT with a cystic degenerative lesion …

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  • Contributors DM wrote the manuscript and analysed the patient’s data. HH collected the patient’s data. YA gave final approval of the manuscript.

  • Competing interests None declared.

  • Patient consent for publication Obtained.

  • Ethics approval This study was reviewed and approved by the New Tokyo Hospital Institutional Review Committee.

  • Provenance and peer review Not commissioned; externally peer reviewed.