Malignant Optic pathway glioma.

Optic nerve pilomyxoid astrocytoma.

Optic pathway hypothalamic pilocytic astrocytoma.

Dodge classification

The most widely accepted classification of optic pathway gliomas was first proposed by Dodge et al in 1958 and divides these tumours into just three groups based on anatomical localisation:

stage 1: optic nerves only

stage 2: chiasm involved (with or without optic nerve involvement)

stage 3: hypothalamic involvement and/or other adjacent structures

A more recent modification of the Dodge classification has been proposed which further subdivides each stage.