if indications are defined by stringent criteria, the technique will gain an impor- tant place particularly in pediatric otology. Its clinical indications can naturally not be covered in this volume. As the working space available is limited and the structures in it are very deli- cate, the iatrogenic trauma associated with endoscopy must be minimized at all cost. This requires a profound understanding of anatomy. This volume will help the readers acquire or broaden it. April 2000 M. Tschabitscher C.Klug VI Acknowledgements The long tradition of the Institute of Anatomy at the University of...