Glioma of the Optic Nerve and Optic Chiasm

Most optic gliomas are benign astrocytomas that might better be considered hamartomas than true neoplasms. Optic gliomas rerely becomemalignant and their morbidity is mainly due to enlargement of the tumor. The presenting symptoms and signs are variable depending on the location of the tumor. We experienced a huge optic chiasm and optic nerve glioma which caused hydrocephalus, vomiting, gait disturbance and decreased visual acuity in 4 years old boy.