Phenotyping of Type 2 Inflammation Profile by Rheology of Nasal Secretions and Tissue Quantification of Eosinophilic Polymorphonuclear Cells in the Middle Turbinate

Inclusion Criteria: * Patient requiring sinonasal surgery * For patients in the CRSwNP group: Presence of nasal polyposis defined according to EPOS 2020 recommendations: Clinical examination revealing, for at least 12 weeks prior to inclusion, 2 or more of the following symptoms: * Nasal congestion * Rhinorrhea (anterior/posterior) * Or a Facial pain/pressure * Or a Reduced or lost sense of smell AND visible polyps in both nasal cavities on endoscopic examination of the middle meatus (regardless of size). Exclusion Criteria: * Inability to provide a sinonasal secretion sample by blowing * Conditions causing secondary nasal polyposis (e.g., cystic fibrosis, ciliary dyskinesia, immune disorders, allergic fungal sinusitis) * Illiteracy * Lack of consent * Legal protection status (guardianship, curatorship, etc.) * No social security coverage * Persons deprived of liberty by judicial or administrative decision * Participation in another study with an ongoing exclusion period