The article provides data about benign tumors of nasal cavity (inverted papillomas), considering the principles of this disease etiology and incidence. The work focuses on the diagnostics of neoplasms of other nasal cavity tumors, in particular, CT and MR diagnostics. The methods for surgical treatment of the nasal cavity inverted papilloma are provided. A separate paragraph of the work is devoted to the observations, providing the data of the disease symptoms. The authors describe an example of nasal cavity inverted papilloma treatment from endonasal endoscopic access and its late result.