Fig. 3

a–d Axial and coronal contrast-enhanced CT images showing hypertrophy of subcutaneous tissue of the left thigh with multiple dilated venous channels in subcutaneous and intermuscular planes (predominantly in anteromedial distribution) with extension into patellofemoral joint space (c; solid arrow). These varicous channels are seen causing cortical bony erosions (a, b; arrows) as well as frank intraosseous extension (d, solid arrow)