[Otoendoscopy: application in the middle ear surgery]

Oto-endoscopy is already of considerable value not only for the diagnosis of otological disorders, but also in peroperative use for access to areas that are difficult to see even under an operating microscope (sinus tympani, anterior attic, protympanum). The authors present an endoscopic operation, and report on their experience in cholesteatoma surgery using a closed technique.