Necrotizing myositis on CT

An axial CT scan through the mid thighs (A) shows necrosis of the right vastus lateralis muscle (arrowheads) with spread to the medial aspect of the thigh (arrow). The normal left vastus lateralis (asterisk) is shown in contrast. Image B is a coronal reconstruction and shows the cranio-caudal extent of the necrosis (arrowheads).