title: [Retroperitoneal cystic mass. Giant exophytic gastric leiomyosarcoma].
abstract: Presentation of an unusual case of pre-operatively non-striated retroperitoneal cystic mass confirmed to be a gastric leiomyosarcoma after pathoanatomical study. Considering the rarity of the case, we reviewed the literature as well as the epidemiological, clinical, pathoanatomical and surgical characteristics of gastric leiomyosarcomas which, as in the present case, can appear as retroperitoneal mass.
authors.affiliation: Servicio de Urología, Hospital Miguel Servet, Zaragoza.
authors.forename: J M
authors.initials: JM
authors.lastname: Cuesta Presedo
authors.forename: C
authors.initials: C
authors.lastname: Rioja Sanz
authors.forename: J
authors.initials: J
authors.lastname: Benejam Gual
authors.forename: P
authors.initials: P
authors.lastname: Gil Martínez
authors.forename: A
authors.initials: A
authors.lastname: Bono Ariño
authors.forename: L A
authors.initials: LA
authors.lastname: Rioja Sanz
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D007890:Leiomyosarcoma / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis*; D013274:Stomach Neoplasms / Q000175:diagnosis*