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Related Experiment Videos

Hemangioma from head to toe: MR imaging with pathologic correlation.

Joan C Vilanova1, Joaquim Barceló, James G Smirniotopoulos

  • 1Department of Magnetic Resonance, Clínica Girona, Lorenzana 36, 17002 Girona, Spain. rmgirona@comg.es

Radiographics : a Review Publication of the Radiological Society of North America, Inc
|March 18, 2004
PubMed
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Magnetic resonance (MR) imaging helps characterize hemangiomas, common vascular tumors found throughout the body. Understanding MR imaging features aids in diagnosing and managing these diverse vascular anomalies.

Area of Science:

  • Radiology
  • Vascular Neoplasms
  • Medical Imaging

Background:

  • Hemangiomas are common benign vascular neoplasms resembling normal vessels, occurring in all human organs.
  • Vascular lesions are classified as infantile hemangiomas or vascular malformations based on clinical and histological factors.
  • Magnetic resonance (MR) imaging is crucial for evaluating vascular malformations, with features varying by subtype.

Purpose of the Study:

  • To detail the magnetic resonance (MR) imaging characteristics of various vascular lesions, including hemangiomas and vascular malformations.
  • To differentiate between infantile hemangiomas and vascular malformations using MR imaging.
  • To highlight the role of MR imaging in diagnosing and managing vascular anomalies across different organ systems.

Main Methods:

Related Experiment Videos

  • Review of MR imaging features for different types of vascular malformations (central nervous system, soft-tissue, osseous).
  • Analysis of MR imaging and MR angiography for categorizing soft-tissue vascular malformations (high-flow vs. low-flow).
  • Evaluation of characteristic MR imaging findings in liver and spleen hemangiomas, including contrast enhancement patterns.

Main Results:

  • MR imaging features of central nervous system vascular malformations are dependent on the pathologic subtype.
  • Soft-tissue vascular malformations can be classified as high- or low-flow using combined MR imaging and MR angiography.
  • Osseous vascular malformations typically show a high-signal-intensity trabecular pattern on T1- and T2-weighted MR imaging.
  • Liver and spleen hemangiomas exhibit T2 hyperintensity and centripetal contrast enhancement.
  • Aggressive vascular neoplasms like hemangioendothelioma show nonspecific MR imaging findings.

Conclusions:

  • MR imaging allows for the characterization of hemangiomas with typical features that vary by anatomic location.
  • Familiarity with MR imaging findings is essential for accurate diagnosis and effective management of hemangiomas and other vascular anomalies.
  • MR imaging plays a vital role in differentiating various vascular lesions and guiding clinical decisions.