Giant Cholesteatoma Following Post-traumatic Atresia of External Auditory Canal; A Case Report.

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A 69-year-old male, complaining of pain in the left ear, had a history of left temporal bone fracture 34 years ago. The cartilaginous portion of the left external auditory canal was completely blocked by scar tissue. A CT scan revealed a huge soft tissue mass occupying the whole temporal bone space except for the pyramidal portion. At surgery, the cholesteatoma was opened only to the reconstructed external ear canal, care being taken to preserve the facial nerve, because the cholesteatoma matrix was extensively adherent to the dura of the middle and posterior cranial fossa as well as to the facial nerve. In patients with post-traumatic atresia of the external auditory canal, we should pay attention to the presence of secondary cholesteatoma and diagnose it by CT and MRI image before it becomes large.
耳鼻咽喉科臨床学会の論文