May Be Caused by

Arteriovenous malformation of brain surface

Chronic subdural hematoma

Cisterna magna anomaly

Eosinophilic granuloma

Epidermoid

Hemangioma

Langerhans cell histiocytosis

Leptomeningeal cyst

Melanoma of dura

Meningioma

Metastasis

Multiple myeloma

Oligodendroglioma

Osteomyelitis

Pacchionian granulation

Porencephalic cyst

Sarcoma of dura

Sinus pericranii