Figure 5a. Hemangioma. (a) Coronal T1-weighted MR image demonstrates a lobulated mass (arrows) that involves the inferior aspect of the hemiscrotum. The lesion has intermediate signal intensity and is confined to the lower scrotum. (b) Axial fast spin-echo T2-weighted MR image shows that the lesion is separate from the adjacent testicle and epididymis. The hyperintense areas represent stagnant blood. Several small foci of signal void (arrowheads) likely represent thrombus. (c) Sagittal inversion-recovery MR image reveals a dominant feeding vessel (long arrow) that courses along the posterior aspect of the testicle and simulates a dilated testicular vein. Punctate foci of hypointense thrombus (short arrows) are seen within the hemangioma. (Figure 5 reprinted, with permission, from reference 8.)