D.D.of peri-ventricular lesions

1-PERI-VENTRICULAR LESIONS:
A) Smooth:
1-Transependymal CSF Permeation
B) Patchy:
1-Age:
-Young
Multiple sclerosis.
Vasculitis
Migraine.
ADEM (acute disseminated encephalomylomyelitis).
-Older
Deep White matter ischemia.
2-Aids:
-HIV encephalitis.
-Toxoplasmosis.
-Lymphoma.
-Progressive multifocal encephalopathy
3-Trauma:
-Shering injury.
4-Others:
-Lyme disease (similar appearance of multiple sclerosis).