title: Giant retroperitoneal liposarcoma.
abstract: BACKGROUND
  Liposarcoma is the most frequent histopathological variety of the retroperitoneum, surgery is the gold standard for treatment.
  
  
  METHODS
  We present the case of a 24-year-old male who was diagnosed with a giant retroperitoneal liposarcoma. The patient received palliative treatment due to non-resectability on the basis of chemotherapy. We decided to perform surgery after no benefit was received with systemic treatment. Complete macroscopic resection of the tumor was performed, without multi-organ resection. The patient is currently alive and disease free at 14 months of evolution.
  
  
  CONCLUSIONS
  Retroperitoneal liposarcomas represent a unique situation and require a more aggressive surgical approach including multiple resections for recurrences. Based on the ability of the patient to tolerate the procedure, surgery is suggested to evaluate resectability of the tumor. We must take into consideration whether prolonged survival will be attained and tumor removal will result in palliation of symptoms.
authors.affiliation: Department of Surgical Oncology, Instituto Nacional de Cancerología, México, D.F., Mexico.
authors.forename: Angel
authors.initials: A
authors.lastname: Herrera-Gómez
authors.forename: César
authors.initials: C
authors.lastname: Ortega-Gutiérrez
authors.forename: Alejandro Mohar
authors.initials: AM
authors.lastname: Betancourt
authors.forename: Kuauhyama
authors.initials: K
authors.lastname: Luna-Ortiz
mesh_terms: D000328:Adult; D006801:Humans; D008080:Liposarcoma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D008297:Male; D012186:Retroperitoneal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome