2-month-old male with a reported history of an enlarging perianal mass.EXAMINATION: MRI Pelvis without and with IV contrast 6/30/2016 8:39 Focus of high T2 signal (series 801, image 22) with an arrowhead configuration and several branching curvilinear tendrils arising from the 6:00 position of the anal verge. The focus measures approximately 1.5 cm in length, 0.3 cm in thickness, and demonstrates enhancement (series 1001, image 26). Bilateral hydroceles are noted.
Enhancing abnormal signal adjacent to the anal verge is favored to represent a vascular lesion. A sonogram is recommended for further characterization.