title: Clinical considerations on the retroperitoneal liposarcomas.
abstract: OBJECTIVE
  It presents a clinical case of undifferentiated retroperitoneal liposarcoma with 5 years' recurrence from the first operation for the rarity of the occurrence, the problems related to surgery and complementary therapeutic approach.
  
  
  METHODS
  Male patient aged 73 was operated for removal of retroperitoneal mass with involvement of the right kidney at the Second University of Naples in the 2003. In accordance with the interdisciplinary board, complementary therapy is not indicated and follow-up program. The successive controls were negative until at least 2007. Reoperation for recurrence in 2008 for the presence of massive bone formation occupying a large part in the right half of the abdomen at the sub-hepatic level. In both cases histological examination showed undifferentiated liposarcoma.
  
  
  CONCLUSIONS
  It is of unknown etiology and only 25% occurs in well-differentiated cells are also more than 100 histological subtypes, 85% are malignant. The most affected is the male sex and from the beginning looks like malignancy. The trend of growth in general is slow, and in most cases tends to recur over time. The role of chemotherapy and radiation therapy is controversial.
  
  
  CONCLUSIONS
  The peculiarity of our case is higher than the average survival despite advanced age and presence of recurrence. This confirms the importance of surgical treatment, thus offering the patient a chance of better long-term survival.
authors.affiliation: Department of Gerontology, Geriatry and Metabolic Diseases, O.U. of Geriatric Surgery, School of Medicine, Second University of the Study of Naples, Naples, Italy. pasquale.petronella@unina2.it
authors.forename: Pasquale
authors.initials: P
authors.lastname: Petronella
authors.forename: Marco
authors.initials: M
authors.lastname: Scorzelli
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Iannacci
authors.forename: Marco
authors.initials: M
authors.lastname: Ferretti
authors.forename: Andrea
authors.initials: A
authors.lastname: Fiore
authors.forename: Fulvio
authors.initials: F
authors.lastname: Freda
authors.forename: Raffaele
authors.initials: R
authors.lastname: Rossiello
authors.forename: Silvestro
authors.initials: S
authors.lastname: Canonico
mesh_terms: D000368:Aged; D006801:Humans; D008080:Liposarcoma / Q000473:pathology* / Q000601:surgery*; D008297:Male; D009364:Neoplasm Recurrence, Local / Q000473:pathology* / Q000601:surgery*; D012186:Retroperitoneal Neoplasms / Q000473:pathology* / Q000601:surgery*; D016896:Treatment Outcome