title: Gastroduodenal intussusception due to gastric schwannoma treated by Billroth II distal gastrectomy: one case report.
abstract: Schwannomas are rarely observed in the gastrointestinal tract. The most common symptoms of a gastric schwannoma are abdominal pain or dyspepsia, gastrointestinal bleeding, and an abdominal mass. Many gastric schwannomas are asymptomatic and are discovered incidentally or at postmortem. The diagnosis of a schwannoma is based on immunohistochemical positivity for S-100 protein. We present a case report of a rare complication of gastric schwannoma causing gastroduodenal intussusception that was successfully managed by a Billroth II distal gastrectomy. In this rare case, the patient had intermittent, colicky abdominal pain, nausea, and vomiting for over 4 wk accompanied by a weight loss. A diagnosis of gastric intussusception was made by computed tomography. A Billroth II distal gastrectomy was then performed, and complete en bloc removal (R0 resection) was achieved. Pathology confirmed a gastric schwannoma through positive immunohistochemical staining for S-100 protein.
authors.affiliation: Jia-Hua Yang, Min Zhang, Zhi-Hua Zhao, Yu Shu, Jun Hong, Yi-Jun Cao, Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China.
authors.forename: Jia-Hua
authors.initials: JH
authors.lastname: Yang
authors.affiliation: Jia-Hua Yang, Min Zhang, Zhi-Hua Zhao, Yu Shu, Jun Hong, Yi-Jun Cao, Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China.
authors.forename: Min
authors.initials: M
authors.lastname: Zhang
authors.affiliation: Jia-Hua Yang, Min Zhang, Zhi-Hua Zhao, Yu Shu, Jun Hong, Yi-Jun Cao, Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China.
authors.forename: Zhi-Hua
authors.initials: ZH
authors.lastname: Zhao
authors.affiliation: Jia-Hua Yang, Min Zhang, Zhi-Hua Zhao, Yu Shu, Jun Hong, Yi-Jun Cao, Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Shu
authors.affiliation: Jia-Hua Yang, Min Zhang, Zhi-Hua Zhao, Yu Shu, Jun Hong, Yi-Jun Cao, Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Hong
authors.affiliation: Jia-Hua Yang, Min Zhang, Zhi-Hua Zhao, Yu Shu, Jun Hong, Yi-Jun Cao, Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China.
authors.forename: Yi-Jun
authors.initials: YJ
authors.lastname: Cao
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000032:analysis; D001706:Biopsy; D003085:Colic / Q000209:etiology; D004378:Duodenal Diseases / Q000175:diagnosis / Q000209:etiology / Q000601:surgery*; D005743:Gastrectomy / Q000379:methods*; D005763:Gastroenterostomy / Q000379:methods*; D006801:Humans; D007150:Immunohistochemistry; D007443:Intussusception / Q000175:diagnosis / Q000209:etiology / Q000601:surgery*; D008297:Male; D009442:Neurilemmoma / Q000737:chemistry / Q000150:complications / Q000473:pathology / Q000601:surgery*; D009418:S100 Proteins / Q000032:analysis; D013274:Stomach Neoplasms / Q000737:chemistry / Q000150:complications / Q000473:pathology / Q000601:surgery*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
chemical_list: D014408:Biomarkers, Tumor; D009418:S100 Proteins
keywords: Gastric schwannoma; Gastroduodenal intussusception