[Abnormal postoperative findings in the external ear canal and tympanic membrane and their treatment]

We describe uncommon complications after tympanoplasty affecting the outer auditory canal and the tympanic membrane such as stenosis of the auditory canal, fistulas, lateralization of the tympanic membrane, anulus cholesteatoma and cholesteatoma of the auditory canal. Typical findings are discussed and explained with the aid of illustrations. Treatment and indications for revision are discussed.