Article: Exostoses of the external auditory canal.

The otoscopic view is that of a left ear with a single large globular sessile exostosis that almost completely obstructs the ear canal. The surgical approach is similar to that for canal skin tympanoplasty. The patient is placed under a local or general anesthetic, and the surgeon works through a speculum. An incision is made in the normal portion of the ear canal. The canal skin and periosteum are elevated from the bone of the exostosis until there is no space for the instruments to move medially. The bone is then removed with a small drill or curette until enough space is again made to elevate more skin toward the annulus. This procedure is repeated by alternately ...

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