orbital pseudotumor

• nonspecific inflammation of orbit
• sudden, painful proptosis
• Rx: steroids

• middle age, M=F
• unilateral (90%)

• EOM enlargement: one muscle, inferior rectus most common
• lacrimal gland enlargement
• optic nerve enlargement + irregularity
• scleral enhancement (50%)
• streaky intraconal fat
• orbital mass (intra- or extraconal, discrete or irregular)

© 2002, C.E. Kahn, Jr.
2002-04-18