Well-circumscribed lobulated soft tissue mass of the anterolateral aspect of the right forearm measuring 70 x 30 x 10 mm of intermuscular location encircling partially the radius, extending to the flexor digitorum profundus muscle. It elicits a low signal on T1, high signal on T2 with blood-filled cavities and foci of calcification (phleboliths) of low signal on all sequences. The post-contrast sequences demonstrate a progressive heterogeneous enhancement.