May Be Caused by

 Common

Brain stem glioma

Cerebellar astrocytoma

Ependymoma

Primitive neuroectodermal tumor

 Uncommon

Acoustic schwannoma

Choroid plexus papilloma

Dermoid

Epidermoid

Hemangioblastoma

Lhermitte-Duclos disease

Meningioma

Metastasis

Rhabdomyosarcoma

Skull base tumor

Teratoma