[Nasal polyposis]

Nasal Polyposis. Nasal polyposis is a chronic bilateral rhinosinusitis characterized by the development of polyps in the nasal cavities whose prevalence is estimated in the general population at about 5%. The semiology is dominated by nasal obstruction, posterior rhinorrhea and anosmia. The Widal-Samster triad associates nasal polyposis, asthma, and intolerance to aspirin, sulfites, and NSAIDs. The treatment is medical; it is based on long-term local corticosteroid therapy, and general corticosteroid therapy not exceeding three short annual courses. Surgery was only performed when failures of medical treatment; it is performed by endonasal videosurgery when patients remain uncomfortable with significant symptoms despite the use of at least three short courses of oral corticosteroids per year.