Computed tomography image showed enlargement of the medial rectus muscle and proptosis in the right eye (bidirectional arrow). Acute monolateral proptosis and orbital myositis in a patient with discoid lupus erythematosus: a case report: Arrico L, Abbouda A, Bianchi S, Malagola R - Journal of medical case reports (2014). Not altered. CC.
Proptosis is displacement of the eye forward.
Proptosis may be due to graves disease (thyroid opthalmopathy), lacrimal gland enlargement due to inflammation, or neoplasms.
The two most common primary tumors of the optic nerve (meningioma and glioma) may cause proptosis.
