title: Orbital liposarcoma.
abstract: METHODS
  The case is presented of a 46-year-old male with right eye proptosis and conjunctival hyperaemia, of 18 months onset. A well-defined intraconal mass was found in the computed tomography. In magnetic resonance this was hypo-intense on T1, enhanced with gadolinium and hyperintense on T2. Excisional biopsy was performed, which was reported as a well-differentiated liposarcoma in the histopathology study.
  
  
  CONCLUSIONS
  Liposarcoma is a malignant adipose tissue tumour. It is very rare in the orbit, with 5 histological types, the most common being myxoid. The treatment of choice is wide surgical excision and may be accompanied with radiotherapy. As it is an infiltrative tumour, It has a high rate of recurrence.
authors.affiliation: Servicio de Órbita, Párpados y Vía Lagrimal, Hospital Central Militar, Ciudad de México, México. Electronic address: ambp09@gmail.com.
authors.forename: A M
authors.initials: AM
authors.lastname: Borbolla-Pertierra
authors.affiliation: Servicio de Órbita, Párpados y Vía Lagrimal, Hospital Central Militar, Ciudad de México, México.
authors.forename: D R
authors.initials: DR
authors.lastname: Morales-Baños
authors.affiliation: Servicio de Oftalmología, Hospital Central Militar, Ciudad de México, México.
authors.forename: L R
authors.initials: LR
authors.lastname: Martínez-Nava
authors.affiliation: Servicio de Patología, Hospital Central Militar, Ciudad de México, México.
authors.forename: G A
authors.initials: GA
authors.lastname: Garrido-Sánchez
authors.affiliation: Servicio de Radiología e Imagen, Hospital Central Militar, Ciudad de México, México.
authors.forename: C M
authors.initials: CM
authors.lastname: López-Hernández
authors.affiliation: Servicio de Órbita, Párpados y Vía Lagrimal, Hospital Central Militar, Ciudad de México, México.
authors.forename: P
authors.initials: P
authors.lastname: Velasco-Ramos
mesh_terms: D001706:Biopsy; D003131:Combined Modality Therapy; D003287:Contrast Media; D017234:Eye Evisceration; D005682:Gadolinium; D006801:Humans; D008080:Liposarcoma / Q000000981:diagnostic imaging* / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009918:Orbital Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery; D018714:Radiotherapy, Adjuvant; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media; D005682:Gadolinium
keywords: Adipose tissue; Exenteración orbitaria; Liposarcoma; Neoplasia orbitaria; Orbit evisceration; Orbital neoplasma; Proptosis; Tejido adiposo