May Be Caused by

Caffey disease

Cholesteatoma

Cranial fasciitis

Cyanotic congenital heart disease

Hemangioma

Hyperparathyroidism

Langerhans cell histiocytosis

Leptomeningeal cyst

Metastasis

Myeloma

Osteolysis

Osteomyelitis

Paget disease of bone

Radiation osteonecrosis

Sarcoidosis

Surgical defect