Erosion of mastoid

Common: Cholesteatoma; Cholesterol granuloma; Chronic otitis media; Mastoiditis; Temporal bone fracture
Uncommon: Bone neoplasm; Carcinoma of external auditory meatus; Carcinoma of mastoid; Carcinoma of middle ear; Ceruminous gland tumor; Dermoid cyst; Embryonal rhabdomyosarcoma; Epidural mastoid cyst; Epidural mastoid pneumatocele; Glomus jugulare tumor; Glomus tympanicum tumor; Granuloma; Hemangioma; Keratosis obturans; Langerhans cell histiocytosis; Lymphoma; Malignant external otitis; Meningioma; Metastasis; Nasopharyngeal neoplasm; Postmastoidectomy meningocele; Postmastoidectomy meningoencephalocele; Sarcoidosis; Schwannoma; Syphilis; Tuberculosis; Venous malformation

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