title: Primary intraluminal leiomyosarcoma of the inferior vena cava: value of MRI with contrast-enhanced MR venography in diagnosis and treatment.
abstract: BACKGROUND
  Primary intraluminal leiomyosarcoma of the inferior vena cava (IVC) is extremely rare. Diagnostic imaging plays an important role in the diagnosis and conducting treatment strategy.
  
  
  METHODS
  MRI with contrast-enhanced MR venography was performed in six patients with primary intraluminal leiomyosarcoma of the IVC.
  
  
  RESULTS
  In the six patients, three had leiomyosarcoma of the middle IVC, and three the lower IVC. The mean axial diameter of tumor was 4.3 cm. MRI with contrast-enhanced MR venography not only demonstrated the tumor's location, morphology, extent, and collateral vessels but also distinguished tumor from thrombus of the IVC. Three patients underwent surgery and three did not. Four patients (three with surgery and one without surgery) were alive during the following periods, but one presented with local recurrence and all with metastases at a median time of 23 months. One patient died at 15 months after the diagnosis with liver and subcutaneous metastases, one lost to follow up.
  
  
  CONCLUSIONS
  MR image with contrast-enhanced MR venography is a noninvasive and accurate technique for diagnosis of primary intraluminal leiomyosarcoma of IVC. Its providing information is very helpful for pre- and post-surgery. It can be used as one of the first choice examinations.
authors.affiliation: Department of Radiology, Changhai Hospital/2nd Military Med Univ, Shanghai, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Huang
authors.forename: Qi
authors.initials: Q
authors.lastname: Liu
authors.forename: Jian Ping
authors.initials: JP
authors.lastname: Lu
authors.forename: Fei
authors.initials: F
authors.lastname: Wang
authors.forename: Li
authors.initials: L
authors.lastname: Wang
authors.forename: Ai Guo
authors.initials: AG
authors.lastname: Jin
mesh_terms: D000328:Adult; D000368:Aged; D003287:Contrast Media; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D007890:Leiomyosarcoma / Q000175:diagnosis*; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D019043:Vascular Neoplasms / Q000175:diagnosis*; D014682:Vena Cava, Inferior / Q000473:pathology
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA