Fig. 8

a Angiographic appearance of right facial venous hemangioma type I, isolated malformation without venous drainage, b 3Â month follow-up after injection sclerotherapy, regression of lesion size by 50%, c, d follow-up U/S images showing: few phleboli of the sclerosed vessels, sclerosed cystic spaces, decreased number of vessels per diameter area (from 5 to 2 vessels/5cm3