- See: AV malformations
- venous malformations, although present at birth, often are not noticed until 1 year of age. They engorge when dependent, decompress when elevated, and enlarge with trauma, puberty, pregnancy, or use of oral contraceptives;
- frequently confused with hemangiomas
- present at birth
- slow steady growth
- do not involute
- discrete and diffuse subtypes
- Diff Dx:
- AV Malformations
- Vascular testing
- X-ray: calcification, adjacent bone changes
- MRI: can distinguish between high flow (AVM) and low flow lesions (venous malformations);
- Closed system venography
- Radionuclide scanning;
- low-flow venous and lymphatic malformations can be treated either conservatively by compression garments or surgically by staged
debulking, avoiding the need to return later to a previously scarred area;
- surgery is complicated by bleeding or lymphatic leaks, hematoma or seroma, formation, skin necrosis, scarring, ulceration, contractures, and distention of channels in the same or adjacent areas
Distinguishing Soft-Tissue Hemangiomas From Vascular Malformations Using Technetium-Labeled Red Blood Cell Scintigraphy.
Hemangiomas, vascular malformations, and lymphovenous malformations: classification and methods of treatment.
Intra-articular Venous Malformations of the Knee
Original Text by Clifford R. Wheeless, III, MD.
Last updated by Data Trace Staff on Monday, August 13, 2012 2:41 pm