The previously described soft tissue mass appears lobulated multiloculated of low signal intensity on T1WI, heterogeneous high signal intensity on T2WI and STIR with heterogeneous enhancement on postcontrast sequences. The cartilaginous matrix demonstrates a low signal on T1WI with areas of high signal, and low signal T2WI. The obturator externus, pectineus, and adductor longus muscles are displaced anteriorly, and adductor brevis muscle posteriorly with most likely involvement of the adductor magnus muscle. The gracilis muscle is atrophied.