Abstract
Recent advances in transcanal endoscopic ear surgery (TEES) have made it possible to endoscopically remove most cholesteatomas even if they extend into the mastoid cavity. We examine and remove such cholesteatomas by resecting the scutum and posterior bone of the external auditory canal (EAC) and performing an endoscopic hydro-mastoidectomy. The area of the EAC that is resected for cholesteatomas during TEES is much smaller than the area of the EAC that is resected during microscopic ear surgery. Thus, TEES is minimally invasive and is beneficial for patients with a cholesteatoma.
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