Figure 6a. Leiomyosarcoma arising from the saphenous vein in a 53-year-old man. (a) Doppler US image shows a circumscribed echogenic mass with marked hypervascularity. (b, c) Axial T1-weighted (802/17) (a) and axial T2-weighted (2350/80) (b) SE MR images show a circumscribed soft-tissue mass (arrow) in the subcutaneous adipose tissue. The signal intensity of the mass is indicative of a solid lesion. (d) Axial gadolinium-enhanced T1-weighted (675/17) fat-suppressed SE MR image shows homogeneous moderate enhancement of the mass (arrow). (e) Photograph of the gross specimen shows a lobulated mass that surrounds the saphenous vein (arrow). Scale is in centimeters.