(a) Contrast-enhanced axial CT image through upper pelvis demonstrate enlarged, heterogeneously enhancing right psoas and iliacus muscles with the muscles demonstrating increased and prominent striations (as pointed by arrow). Left psoas is normal. (b) Contrast-enhanced coronal CT image through the abdomen and the pelvis demonstrate enlarged, heterogeneously enhancing right psoas and iliacus muscles (as pointed by arrow) with lateral and anterior displacement of right kidney. No fluid collection is seen.
