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Optic pathway gliomas: a review.

Mandy J Binning1, James K Liu, John R W Kestle

  • 1Department of Neurosurgery, Primary Children's Medical Center, University of Utah School of Medicine, Salt Lake City, Utah 84113, USA.

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Optic pathway gliomas are rare childhood brain tumors, often linked to neurofibromatosis Type 1 (NF1). Many low-grade tumors can be monitored, with chemotherapy or radiation used for progressive cases.

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Area of Science:

  • Pediatric Oncology
  • Neuro-oncology
  • Ophthalmology

Background:

  • Optic pathway gliomas (OPGs) constitute 3-5% of pediatric intracranial tumors.
  • They frequently occur in children under 10 and are associated with neurofibromatosis Type 1 (NF1) in 11-30% of cases.
  • OPGs are typically low-grade gliomas with variable clinical courses.

Discussion:

  • The indolent nature of many OPGs supports observation without immediate intervention, particularly in NF1 patients.
  • Treatment decisions are complex due to the variable natural history of these tumors.
  • Management strategies vary based on tumor progression, patient age, and presenting symptoms.

Key Insights:

  • Observation is a viable initial strategy for many OPGs, especially in NF1.
  • Chemotherapy is the primary treatment for progressive OPGs.
  • Radiation is reserved for older children with progressive disease, and surgery addresses mass effect or localized tumors.

Outlook:

  • Further research into the variable natural history of OPGs is needed.
  • Optimizing treatment sequencing for progressive OPGs remains a key challenge.
  • Long-term surveillance is crucial for managing OPGs and their potential complications.