Intramuscular Dirofilariasis Mimicking an Orbital Metastasis in a Patient with Breast Cancer
Figure 1
Coronal images from a noncontrast CT (a), fat-saturated T2WI (b), and fat-saturated postgadolinium T1WI (c) demonstrate a noncalcified, avidly though heterogeneously enhancing mass involving the left superior rectus muscle (arrows). Note the lack of any significant intra- or extraconal inflammatory changes in the orbital fat, and the slightly displaced but normal caliber superior ophthalmic vein along the inferior aspect of the mass.
