Venous Malformation of the Head and Neck and Extremities
Venous malformation [VM] presents with a wide spectrum of involvement, ranging from focal cyst-like, blood-filled lesions with minimal communication with the conducting veins to diffuse lesions involving all of the venous structures in multiple planes of an involved anatomic area. The genetic basis is fairly well understood. Clinical problems include pain, deformity, bleeding, and consumption coagulopathy. VMs are hyperintense on T2-weighted MRI sequences.
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