title: Primary liposarcoma of the sigmoid presenting as colonic intussusception - A case report.
abstract: Liposarcomas are malignant soft tissue neoplasms usually located in the retroperitoneum, head, neck and extremities. Although secondary invasion of the gastrointestinal tract by retroperitoneal sarcomas is frequent, primary involvement is uncommon. We report a young patient with Crohn's disease in remission presenting with intussusception of the colon due to a primary liposarcoma of the sigmoid. Emergency resection confirmed the diagnosis. The patient remains in remission after five years. This represents the youngest diagnosis of liposarcoma to date and the first occurring in the sigmoid. We also highlight the concomitant diagnosis of Crohn´s disease.
authors.affiliation: Gastrenterologia e Hepatologia, Hospital Santa Maria, Portugal.
authors.forename: Samuel Raimundo
authors.initials: SR
authors.lastname: Fernandes
authors.affiliation: Serviço de Gastrenterologia e Hepatologia, Hospital Santa Maria, Portugal.
authors.forename: Ana
authors.initials: A
authors.lastname: Rita Gonçalves
authors.affiliation: Gastrenterologia e Hepatologia, Hospital Santa Maria, Portugal.
authors.forename: João
authors.initials: J
authors.lastname: Lopes
authors.affiliation: Serviço de Gastrenterologia e Hepatologia, Hospital Santa Maria, Portugal.
authors.forename: Paula
authors.initials: P
authors.lastname: Moura Santos
authors.affiliation: Serviço de Cirurgia Geral, Hospital Santa Maria, Portugal.
authors.forename: Helena
authors.initials: H
authors.lastname: Lopes da Silva
authors.affiliation: Serviço de Anatomia patológica, Hospital Santa Maria, Portugal.
authors.forename: Conceição
authors.initials: C
authors.lastname: Crujo
authors.affiliation: Gastrenterologia e Hepatologia, Hospital de Santa Maria, Portugal.
authors.forename: José
authors.initials: J
authors.lastname: Velosa
mesh_terms: D000328:Adult; D003108:Colonic Diseases / Q000175:diagnosis* / Q000209:etiology; D003424:Crohn Disease / Q000150:complications; D005260:Female; D006801:Humans; D007443:Intussusception / Q000175:diagnosis* / Q000209:etiology; D008080:Liposarcoma / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D012811:Sigmoid Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D014057:Tomography, X-Ray Computed