An extra-luminal gastric gastrointestinal stromal tumor (GIST) attached by a stalk identified by endoscopic ultrasonography

  • Kaieda Yuta
    Department of Internal Medicine, Kawasaki Municipal Hospital
  • Inoue Kentaro
    Department of Internal Medicine, Kawasaki Municipal Hospital
  • Ishino Sumire
    Department of Internal Medicine, Kawasaki Municipal Hospital
  • Ito Mamoru
    Department of Internal Medicine, Kawasaki Municipal Hospital
  • Nagae Shinya
    Department of Internal Medicine, Kawasaki Municipal Hospital
  • Hanada Ryouta
    Department of Internal Medicine, Kawasaki Municipal Hospital
  • Matsubara Shohei
    Department of Internal Medicine, Kawasaki Municipal Hospital
  • Hisatake Yuta
    Department of Internal Medicine, Kawasaki Municipal Hospital
  • Ariizumi Ken
    Department of Internal Medicine, Kawasaki Municipal Hospital
  • Takagi Hanae
    Department of Internal Medicine, Kawasaki Municipal Hospital
  • Tamai Hironao
    Department of Internal Medicine, Kawasaki Municipal Hospital
  • Kikuchi Yuji
    Department of Surgery, Kawasaki Municipal Hospital
  • Aiura Koichi
    Endoscopy Center, Kawasaki Municipal Hospital

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Other Title
  • EUSにて由来臓器を特定し得た有茎性壁外発育型胃GISTの1例

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<p>An 80-year-old woman presented with an asymptomatic, painless lump in the right breast. Positron emission tomography incidentally revealed a 45 mm × 25 mm-sized, dumbbell-shaped mass in the epigastric region. Abdominal computed tomography showed that the mass was adjacent to both the stomach and the small intestine. Endoscopic ultrasonography (EUS) showed that the hypoechoic mass had a 1.6 mm-diameter stalk attached to the 4th layer of the gastric wall. Laparoscopic partial gastrectomy was performed. The gastric mass with a narrow stalk was resected and was confirmed as GIST of the stomach histopathologically. The stalk of this tumor was composed of smooth muscle tissue without tumor cells. The diameter of the stalk was 1.6 mm on EUS, and 2.2 mm on histopathological examination. We believe that in vivo in some extra-luminal pedunculated gastric GISTs the stalk may become longer and thinner as the GIST grows.</p>

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