Gamuts
Avascular zone near the brain surface
May Be Caused by
Common
Avascular meningioma
Cerebral infarction
Cortical atrophy
Epidural empyema
Epidural hematoma
Epidural hygroma
Occlusive vascular disease
Steal phenomenon
Subdural empyema
Subdural hematoma
Subdural hygroma
Uncommon
Arachnoid cyst
Epidermoid
Langerhans cell histiocytosis
Metastasis
Normal large subarachnoid space
Parasitic cyst
Porencephalic cyst
Sarcoma
Syphilitic pachymeningitis
Tuberculoma