16-18th September, 2019. On the eve of the V Jubilee Forum of Otorhinolaryngologists the Head of Ear Diseases Department of the Federal Scientific and Clinical Center of Otorhinolaryngology Prof. Hassan Diab held a master-class, devoted to the modern otosurgery with temporal bone dissection for ENT doctors. The course program included lectures on operative topografic anatomy of temporal bone, practical exercises with the use of simulators to obtain surgical skills in accordance with high-tech requirements of modern medicine.Within the frame of the master-class there were live broadcasts from the surgical unit of the Center, during which with the help of monitors and comments of Hassan Diab the participants could get acquanted with the application of technologyt and skills in detail. Operations were followed by a detailed analysis and discussion of all stages of the operation.