Gamuts

Erosion of tympanic portion of petrous bone

May Be Caused by
 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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