Unilateral proptosis, pain, conjunctival injection, and motility disturbances in an adult?

• Orbital inflammatory pseudotumor

  • nonspecific idiopathic inflammatory
  • localized to muscle, lacrimal gland, sclera vs. diffuse
  • eyelid erythema or edema
  • palpable mass
  • decreased vision
  • uveitis
  • hyperopic shift
  • optic nerve edema
  • Bilateral disease more common in children
  • CT scan
    • thickening 1+ EOM (inc. tendons)
    • lacrimal gland enlargement
    • thickening of the posterior sclera
  • Treatment corticosteroids +/- radiation

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