Which one of the following statements is incorrect about Optic glioma?
A. Has a peak incidence in first decade
B. Arises from oligodendrocytes
C. Causes meningeal hyperplasia
D. Is associated with type I neurofibromatosis
Correct answer : C. Causes meningeal hyperplasia
Features of optic glioma:
- Cells of origin – astrocytes, oligodendrocytes of optic nerve
- Peak incidence – 2 to 5 years
- Optic glioma is not known to cause meningeal hyperplasia.