Related Experiment Videos
Swollen lower extremity: role of MR imaging
S Duewell1, K D Hagspiel, J Zuber
1Department of Medical Radiology, University Hospital Zurich, Switzerland.
Radiology
|July 1, 1992
Summary
Magnetic resonance imaging (MRI) effectively distinguishes lower limb lymphedema, phlebedema, and lipedema. MRI reveals distinct patterns like honeycomb structures in lymphedema and fluid in phlebedema, aiding diagnosis.
Area of Science:
- Radiology
- Vascular Medicine
- Medical Imaging
Background:
- Lymphedema, phlebedema, and lipedema are common causes of lower limb swelling.
- Accurate differentiation is crucial for appropriate treatment and management.
- Non-invasive imaging modalities are valuable for diagnosis.
Purpose of the Study:
- To evaluate the utility of magnetic resonance imaging (MRI) in differentiating lower limb lymphedema, phlebedema, and lipedema.
- To identify characteristic MRI findings for each condition.
Main Methods:
- Retrospective analysis of 14 patients with lower limb swelling (5 lipedema, 5 lymphedema, 4 phlebedema).
- Standard MRI sequences (T1- and T2-weighted) were performed.
- Contrast-enhanced MRI using gadolinium tetraazacyclododecane-tetraacetic acid (Gd-DOTA) was utilized.
Main Results:
- Lipedema: Homogeneously enlarged subcutaneous layers without increased signal intensity on T2-weighted or post-contrast images.
- Phlebedema: Areas of increased fluid within muscle and subcutaneous fat, with moderate post-contrast enhancement in muscle.
- Lymphedema: A characteristic honeycomb pattern above the fascia with marked T2 signal increase; slight post-contrast enhancement in subcutis.
Conclusions:
- MRI can reliably differentiate between lipedema, lymphedema, and phlebedema of the lower limb.
- Distinct imaging features, including signal intensity changes and tissue patterns, aid in diagnosis.
- MRI provides valuable information for clinical management of these conditions.