Abstract
We reported two cases with the foreign body findings on CT in the external auditory canal.
The first patient was a 45-year-old man who treated for otitis externa with Burow's solution. Preoperative CT showed the metal foreign body like findings in his external auditory canal. The second patient was a 14-year-old boy who treated for intractable otitis externa using Bismuth iodoform paraffin paste. MRSA was detected in his otorrhea. His CT scan revealed the metal foreign body like findings in the external auditory canal. These images of metal foreign body were thought to due to the solution or paste which contains light metal. Recently, Burow's solution and Bismuth iodoform paraffin paste are more often used for treatment of intractable otitis externa. Therefore, the auditory canal should be cleaned carefully before CT scanning in the patients who was treated with these materials.
