CHORUS

Collaborative Hypertext of Radiology

Nervous system

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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)

Related CHORUS documents: extra-ocular muscle disease lacrimal gland enlargement carotid-cavernous sinus fistula Sjogren syndrome tubular (toothpaste) small bowel Weigert-Meyer rule

Copyright © 2013, Charles E. Kahn, Jr.