title: Ball valve syndrome caused by a giant gastric Vanek's tumor.
abstract: Inflammatory fibroid polyps (Vanek's tumor) are rare, accounting for 0.1% of all gastric polyps. This letter describes an unusual case of an intermittent gastric outlet obstruction by a large Vanek's tumor.
authors.affiliation: Serviço de Gastroenterologia, Centro Hospitalar de Setúbal, Portugal.
authors.forename: Cláudio Rodrigues
authors.initials: CR
authors.lastname: Martins
authors.affiliation: Gastroenterologia, Centro Hospitalar de Setúbal, Portugal.
authors.forename: Élia
authors.initials: É
authors.lastname: Gamito
authors.affiliation: Gastroenterologia, Centro Hospitalar de Setúbal, Portugal.
authors.forename: Ana Paula
authors.initials: AP
authors.lastname: Oliveira
mesh_terms: D000368:Aged; D016099:Endoscopy, Gastrointestinal; D017219:Gastric Outlet Obstruction / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D006801:Humans; D008297:Male; D011127:Polyps / Q000150:complications*; D013274:Stomach Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery; D014057:Tomography, X-Ray Computed