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Diffuse venous malformations of the upper limb: morphologic characterization by MRI and venography
M Claudon1, J Upton, P E Burrows
1Department of Radiology and Bouriez Research Foundation, University of Nancy 1, Hopital de Brabois, France.
Pediatric Radiology
|August 7, 2001
Summary
Diffuse venous malformations (VM) in the upper extremity are most extensive in the distal limb and can affect all tissue layers. Their morphology varies based on surrounding tissues, with MRI and venography aiding diagnosis.
Area of Science:
- Radiology
- Vascular Malformations
- Anatomy
Background:
- Diffuse pure venous malformations (VM) represent a significant challenge in upper extremity diagnosis.
- Understanding their morphologic characteristics is crucial for effective management.
Purpose of the Study:
- To define the specific morphologic abnormalities associated with diffuse pure venous malformations (VM) of the upper extremity.
- To correlate imaging findings with tissue involvement and location.
Main Methods:
- Retrospective review of MRI and venography in five patients (6 months to 20 years) with extensive upper limb VM.
- Categorization of venous abnormalities (varicosities, stenoses, pouches) and anomalous venous spaces (lakes, channels, networks).
- Simultaneous review of MRI and venographic data to correlate lesion types, location, and extent.
Main Results:
- MRI revealed significantly higher VM tissue replacement distally versus proximally in the upper limb.
- All tissue layers, including muscles, tendons, and bone, were involved.
- Venography identified superficial varicosities, stenoses, and pouches, while MRI better delineated tissue extent; combined analysis improved lesion characterization.
Conclusions:
- Diffuse upper extremity VM exhibit distal predominance and can involve all tissue layers with characteristic morphologies.
- The morphologic appearance of VM components is influenced by the surrounding tissue type.
- Integrated analysis of MRI and venography enhances the comprehensive understanding of these complex vascular malformations.