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Proptosis patient (coronal CT)

Coronal CT shows an inferior orbital mass that displaces the optic nerve. It is in the exact location of the inferior rectus muscle and seems to completely replace it. The other rectus extraocular muscles appear normal bilaterally. Biopsy is indicated to rule out lymphoma versus a primary myositis or vasculitis. (Contributed by Dr. Mark Duffy.)

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  • Cavernous sinus syndrome