Presentation
Right orbital pain, right eye proptosis, and limitation of motion with a one year history of invasive ductal carcinoma of the breast.
Patient Data
A large well-defined solid mass lesion axial width up to 40 x 35 mm and height up to 25 mm within right side orbital cavity lateral wall bone defect extended within the right orbital cavity posterolateral extraconal space and within the related middle cranial fossa. It partially encases and nasally displaces the superior rectus and lateral rectus muscles. Similar, but smaller, focus within right side frontal sinus cavity with an axial width up to 22 x 15 mm and height up to 10 mm with bone destruction. Minimally bulged within the extraconal upper orbital cavity with impression on superior rectus muscle. Pronounced right side proptosis is seen.
Case Discussion
The case illustrates the non contrast MDCT features of pathologically proved orbital metastasis of invasive ductal carcinoma of the breast. Breast cancer is one of the most common causes of orbital metastasis and in some cases has a desmoplastic reaction and leads to enophthalmos.