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Optic nerve sheath meningiomas.

J J Dutton1

  • 1Duke University Eye Center, Durham, North Carolina.

Survey of Ophthalmology
|November 1, 1992
PubMed
Summary
This summary is machine-generated.

Primary orbital meningiomas, tumors of the optic nerve sheath, grow slowly and rarely threaten life. Conservative management is often best, as surgery or radiotherapy offers limited visual benefit for most patients.

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Area of Science:

  • Ophthalmology
  • Neurology
  • Oncology

Background:

  • Meningiomas are benign tumors arising from meningothelial cells.
  • Primary orbital meningiomas, originating in the optic nerve sheath, are rare, accounting for 1-2% of all meningiomas.
  • They are the second most common optic nerve tumor after gliomas, primarily affecting middle-aged adults.

Purpose of the Study:

  • To review the clinical presentation, management, and prognosis of primary orbital meningiomas.
  • To highlight the indolent nature of these tumors and their impact on vision.

Main Methods:

  • Review of existing literature on orbital meningiomas.
  • Analysis of clinical presentation, diagnostic findings, and treatment outcomes.

Main Results:

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  • Patients typically present with gradual visual loss, optic atrophy, and sometimes optociliary shunt vessels.
  • These tumors exhibit slow, progressive growth, often leading to blindness.
  • Prognosis for life is excellent, with 0% tumor-related mortality.

Conclusions:

  • Conservative management is recommended for most orbital meningiomas.
  • Surgery may be considered for blindness or severe proptosis, but visual improvement is rare.
  • Radiotherapy shows preliminary promise but requires further investigation for long-term efficacy.