Optic nerve sheath meningioma

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  • 40-year-old patient presenting with left sided proptosis.
  • MRI showed an avidly enhancing lesion filling the orbital apex and encasing the optic nerve.

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  • 45-year-old female with eccentric enhancement of the left optic nerve sheath near the orbital apex.
  • There was very high uptake on the Ga-DOTATATE PET scan.

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  • 35-year-old patient developed worsening orbital swelling during pregnancy.
  • An enhancing mass lesion along the inferior aspect of the optic nerve sheath, causing 2 mm of proptosis, was avid on Ga-DOTATATE PET.

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  • 30-year-old patient presented with proptosis but no visual symptoms.
  • MRI showed proptosis secondary to a large enhancing lesion encasing the optic nerve (red arrow).