Fig. 12
From: Vascular anomalies: special considerations in children
a sagittal T1 weighted MR image of the forearm in a 12 year old female. The FAVA lesion (short arrow) replaces almost all of the flexor compartment and is causing contracture at the wrist; b US image of a FAVA lesion of the calf, showing marked echogenicity of the affected muscle (thick arrow) and central dysplastic veins (thin arrow)