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Gastric schwannoma with high accumulation on fluorodeoxyglucose-positron emission tomography resected by non-exposed endoscopic wall-inversion surgery

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Abstract

Gastric schwannoma is a relatively rare tumor arising from Auerbach plexus in the muscle layer of the gastric wall, and constitutes 0.1% to 0.2% of all gastric tumors and 5% of benign non-epithelium—related gastric tumors. We report the case of a 49-year-old woman in whom upper gastrointestinal endoscopy revealed an approximately 2-cm submucosal tumor on the anterior wall of the fornix of the stomach. Contrast-enhanced computed tomography revealed a homogeneously enhanced lesion (~ 17 mm) in the upper third of the stomach as well as a lesion (~ 25 mm) on the left kidney that was strongly enhanced in the early phase. An 18F-fluorodeoxyglucose positron emission tomography scan revealed high accumulation that is characteristic of gastric tumors. The possibility of malignancy was not completely excluded, and the gastric tumor was resected by non-exposed endoscopic wall-inversion surgery. The patient was discharged with a good prognosis 5 days after surgery. In conclusion, non-exposed endoscopic wall-inversion surgery is a minimally invasive and effective method for resecting small gastric submucosal tumors (diameters < 3 cm) for which preoperative diagnosis is difficult.

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Acknowledgements

We would like to thank Dr. T. Ito and T. Yamauchi for their help with the immunopathologic diagnosis as well as Editage (www.editage.jp) for English language editing.

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Authors and Affiliations

  1. Department of Gastroenterology, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan

    Tomoya Sugiyama, Masahide Ebi, Tomoko Ochiai, Kentaro Onishi, Kazuhiro Yamamoto, Satoshi Inoue, Kazunori Adachi, Takashi Yoshimine, Yoshiharu Yamaguchi, Yasuhiro Tamura, Shinya Izawa, Yasutaka Hijikata, Yasushi Funaki, Naotaka Ogasawara, Makoto Sasaki & Kunio Kasugai

  2. Department of Gastroenterological Surgery, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan

    Shintaro Kurahashi & Takuya Saito

Authors
  1. Tomoya Sugiyama
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  2. Masahide Ebi
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  3. Tomoko Ochiai
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  7. Kazuhiro Yamamoto
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  11. Yoshiharu Yamaguchi
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  14. Yasutaka Hijikata
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  15. Yasushi Funaki
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  16. Naotaka Ogasawara
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  17. Makoto Sasaki
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  18. Kunio Kasugai
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Corresponding author

Correspondence to Masahide Ebi.

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Conflict of interest

Kunio Kasugai received lecture fees from Daiichi Sankyo Co., Ltd., Astra Zeneca Co., Ltd., EA Pharma Co., Ltd., Mylan Co., Ltd., Sanwa Kagaku Kenkyusho Co., Ltd., and Takeda Pharmaceutical Co., Ltd. K.K. also received research grants from Astellas Co., Ltd., Daiichi Sankyo Co., Ltd., EA Pharma Co., Ltd., Mitsubishi Tanabe Pharma Co., Ltd., and Takeda Pharmaceutical Co., Ltd. The other authors have no conflicts of interest to declare.

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All procedures followed have been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.

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Sugiyama, T., Ebi, M., Ochiai, T. et al. Gastric schwannoma with high accumulation on fluorodeoxyglucose-positron emission tomography resected by non-exposed endoscopic wall-inversion surgery. Clin J Gastroenterol 13, 50–54 (2020). https://doi.org/10.1007/s12328-019-01014-5

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  • DOI: https://doi.org/10.1007/s12328-019-01014-5

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