May Be Caused by

Basilar artery aneurysm

Basilar artery ectasia

Brown tumor of hyperparathyroidism

Chondroma

Chondromyxoid fibroma

Chondrosarcoma

Chordoma

Craniopharyngioma

Eosinophilic granuloma

Epidermoid

Fibrous dysplasia

Giant cell tumor

Glomus jugulare tumor

Granulocytic sarcoma

Hemangioma

Langerhans cell histiocytosis

Leukemia

Lymphoma

Meningioma

Metastasis

Multiple myeloma

Nasopharyngeal carcinoma

Optic glioma

Osteochondroma

Osteomyelitis

Osteosarcoma

Pituitary macroadenoma

Plasmacytoma

Radiation osteonecrosis

Rhabdomyosarcoma of nasopharynx

Schwannoma

Sphenoid sinus carcinoma

Sphenoid sinus mucocele

Vertebral artery aneurysm

Vertebral artery ectasia