title: An unusual case of primary colonic dedifferentiated liposarcoma.
abstract: BACKGROUND
  İn this paper, we present a rare case of primary dedifferantiated liposarcoma (DDLS) of the colon, management of which is unclear and difficult to cope with.
  
  
  METHODS
  71 year old female patient with complaints of abdominal pain and swelling was referred to our clinic with the diagnosis of intraabdominal mass. 23cm×19cm×18cm tumor starting from the neighborhood of left liver lobe and extending toward pelvic floor was detected on computed tomography. At laparotomy, a multilobulated, soft and yellowish mass was arising from transvers colon and invading greater curvature of stomach. En-bloc removal of the tumor including segmental colon and gastric wedge resection was performed. Postoperative histopathological diagnosis was consistent with dedifferentiated liposarcoma.
  
  
  CONCLUSIONS
  Liposarcomas are rarely encountered in the gastrointestinal tract. Previously, only ten cases of primary liposarcoma of the colon have been reported worldwide and to our knowledge DDLS of transverse colon is the first case reported in the literature. DDLS is a high-grade aggressive tumor carrying the ability to metastasize. Despite complete removal of tumor recurrence is common in DDLS.
  
  
  CONCLUSIONS
  The constellation of findings in our patient demonstrates that liposarcomas which histologically exhibit dedifferentiation are associated with a poor clinical prognosis and advocating surgery alone is not recommended.
authors.affiliation: Department of General Surgery, Akdeniz University School of Medicine, Antalya, Turkey. Electronic address: makturko@gmail.com.
authors.forename: Mehmet Akif
authors.initials: MA
authors.lastname: Türkoğlu
authors.affiliation: Department of Pathology, Akdeniz University School of Medicine, Antalya, Turkey.
authors.forename: Gülsüm Özlem
authors.initials: GÖ
authors.lastname: Elpek
authors.affiliation: Department of General Surgery, Akdeniz University School of Medicine, Antalya, Turkey.
authors.forename: Volkan
authors.initials: V
authors.lastname: Doğru
authors.affiliation: Department of General Surgery, Antalya Training and Research Hospital, Antalya, Turkey.
authors.forename: Hasan
authors.initials: H
authors.lastname: Calış
authors.affiliation: Department of Pathology, Akdeniz University School of Medicine, Antalya, Turkey.
authors.forename: Aslı
authors.initials: A
authors.lastname: Uçar
authors.affiliation: Department of General Surgery, Akdeniz University School of Medicine, Antalya, Turkey.
authors.forename: Cumhur
authors.initials: C
authors.lastname: Arıcı
keywords: Colonic dedifferantiated liposarcoma; Dedifferentiation; Intraabdominal mass