May 28^th-June 1st, 2019 - II World Congress of Otology and 32-nd Politzer Society Meeting were held jointly in Warsaw Варшаве under the auspices and direction of IFOS. Scientific program of the meetings was included lectures, discussions, workshops and sessions. Head of the Otology Department of Federal Scientific-Clinical Center of Otorhinolaryngology (Moscow, Russian Federation) Prof. Hassan Mohammad Ali Diab ( Scientific Faculty Board) took part in the program of the meeting with the following lectures: "Management and surgical outcomes in patients with lateral skull base paranglioma", "Cochlear implantation in cases of cchlear maliformations", "Surgical treatment intratemporal tumors of facial nerve".