Button sequestrum of skull

Common: Breast cancer metastasis; Eosinophilic granuloma; Metastasis; Osteomyelitis; Staphylococcal osteomyelitis
Uncommon: Congenital cholesteatoma; Dermoid cyst; Fibrosing osteitis; Meningioma; Multiple myeloma; Osteonecrosis of skull; Paget disease of bone; Sarcoidosis; Syphilis; Tuberculosis

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