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retroperitoneal liposarcoma

• most common primary retroperitoneal tumor
• rarely arises from lipoma
• 95% of all fatty retroperitoneal tumors

• 40-60 years; M>F
• most radiosensitive sarcoma (32% 5-year survival)

• CT
  • contrast enhancement
  • mixed density (fat and soft tissue elements)
  • pseudocystic pattern: water density secondary to volume averaging
• angio: hypovascular; no vessel dilation, capillary staining, laking

• lower extremity 45%
• abdominal cavity and retroperitoneum 14%
• trunk 14%
• upper extremity 8%
• head and neck 7%

Related CHORUS documents: retroperitoneal fibrosis massive splenomegaly Turner syndrome synovial sarcoma scaphoid (navicular) fracture Huntington disease (chorea-athetosis)

Copyright © 2013, Charles E. Kahn, Jr.