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MRI findings of posttraumatic intrahepatic vascular shunts

Richard C Semelka1, Teresa Lessa, Faiq Shaikh

  • 1Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7510, USA. richsem@med.unc.edu

Journal of Magnetic Resonance Imaging : JMRI
|February 27, 2009
PubMed
Abstract

Insights

Posttraumatic intrahepatic vascular shunts (PIVS) have distinctive MRI features. These include dilated vessels, transient hepatic blush, and early vessel opacification, aiding diagnosis.

Area of Science:

  • Radiology
  • Medical Imaging
  • Vascular Imaging

Background:

  • Posttraumatic intrahepatic vascular shunts (PIVS) are rare vascular abnormalities.
  • Accurate diagnosis of PIVS is crucial for appropriate patient management.

Purpose of the Study:

  • To delineate the characteristic magnetic resonance imaging (MRI) findings of PIVS.
  • To establish imaging criteria for identifying PIVS on MRI.

Main Methods:

  • Retrospective review of abdominal MRI scans from January 2002 to March 2008.
  • Inclusion criteria: MRI features suggestive of PIVS.
  • Imaging protocol included noncontrast T1/T2-weighted and post-gadolinium gradient-echo sequences.

Main Results:

  • Eleven patients (8 male, 3 female; mean age 55.36 years) with PIVS were identified.
  • Consistent findings included transient hepatic parenchymal blush (11/11 patients) and early opacification of efferent vessels (11/11 patients).
  • Dilatation of afferent and efferent vessels was observed in 5 patients.

Conclusions:

  • PIVS demonstrate a unique constellation of MRI features.
  • Key diagnostic indicators are dilated afferent/efferent vessels, transient parenchymal blush, and early efferent vessel opacification.
  • These MRI findings aid in the definitive diagnosis of PIVS.

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