title: A Giant Gastrointestinal Stromal Tumor of the Stomach with Extramural Growth.
abstract: A 76-year-old man presented to our hospital with abdominal distention and loss of appetite. The 10% of weight lost relative to this patient in 1 month. Abdominal computed tomography and magnetic resonance imaging revealed a giant mass, with a major axis of 23 cm, containing solid components, not involving the upper abdominal organs. Esophagogastroduodenoscopy showed extramural compression from the middle gastric body to the antrum, as well as a normal mucosal surface. These findings were suggestive of a gastrointestinal stromal tumor attached to the anterior wall of the stomach without metastasis or invasion. Partial gastrectomy was performed for tumor resection, and the patient was subsequently treated with adjuvant imatinib. We report a rare case of a large extramural gastrointestinal stromal tumor of the stomach that was larger than 20 cm in diameter and present a pertinent literature review.
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Miyazaki
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Seiji
authors.initials: S
authors.lastname: Arihiro
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Eri
authors.initials: E
authors.lastname: Hayashi
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Takuya
authors.initials: T
authors.lastname: Kitahara
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Sayumi
authors.initials: S
authors.lastname: Oki
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Syunsuke
authors.initials: S
authors.lastname: Kamba
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Ide
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Nobuhiko
authors.initials: N
authors.lastname: Komoike
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Kenichi
authors.initials: K
authors.lastname: Satoh
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Kato
authors.affiliation: Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Saruta
authors.affiliation: Department of Innovative Interventional Endoscopy Research, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Hisao
authors.initials: H
authors.lastname: Tajiri
authors.affiliation: Department of Innovative Interventional Endoscopy Research, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Aoki
authors.affiliation: Division of Gastrointestinal Surgery, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Nobuo
authors.initials: N
authors.lastname: Omura
authors.affiliation: Division of Gastrointestinal Surgery, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Norio
authors.initials: N
authors.lastname: Mitsumori
authors.affiliation: Department of Pathology, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Takehiro
authors.initials: T
authors.lastname: Mitsuishi
authors.affiliation: Department of Pathology, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Haruka
authors.initials: H
authors.lastname: Yanagisawa
authors.affiliation: Department of Pathology, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Takahashi
keywords: Gastric submucosal tumor; Gastrointestinal stromal tumor; Mesenchymal tumor