Tuesday, 29 November 2011

Temporal bone rule 2 : D.D.of soft tissue in external ear

1-Membranous type of external auditory canal atresia.
    Look for ossicles fusion and misconfiguration.
    External ear diseases may cause complications for middle ear but rarely to inner ear.
2-Wax ( is the most common cause ).
3-Polyp (The second most common cause ).
4-Malignant otitis media.
5-Tumors(very rare).



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