Structural reconstruction of the nasal mucosa and paranasal sinuses in patients with polypous rhinosinusitis according to cytological and histological studies

Abstract

Aim: to study the morphological patterns of polypous tissue according to cytology and histology. Pateints and methods: 78 patients with a confirmed diagnosis of polypoid rhinosinusitis (PRS) were selected for the study, including 50 men and 28 women aged 25 to 74 years. The material for cytology was scraped from the surface of nasal cavity and paranasal sinus (PNS) polyps, as well as touch smears from the cut surface of removed polyps, and the material for histology was pieces of removed polypous tissue. Results: in the course of the study, the following comparative analysis of the obtained results was made: a) with polyps with a fibrous component in touch smears, there are expressed signs of chronic inflammation along with signs of respiratory epithelial cells proliferation; b) edematous and myxoid polyps are commonly combined with an allergic condition; c) analysis of cytomorphological signs of the respiratory epithelium of the nasal cavity and PNS in PRS indicates a structural alteration of the mucous membrane in this disease. The epithelial proliferation is associated with the activation of stroma components — fibroblasts and leukocytes. At the light-optical level, the characteristics of compensatory and adaptive changes that contribute to the morphofunctional cell unity preservation of the mucous membrane that counteract the pathological process are revealed. Conclusions: according to the method of sampling material for cytology, the most informative are touch smears from the cut surface of the removed polyp, which help to identify more morphological patterns of the polypous tissue. The analysis of cytomorphological features of the respiratory epithelium of the nasal cavity and PNS in PRS indicates the remodeling of the mucous membrane in this disease. The epithelial proliferation is associated with the activation of stroma components — fibroblasts and leukocytes. At the light-optical level, the characteristics of compensatory and adaptive changes that contribute to the morphofunctional cell unity preservation of the mucous membrane that counteract the pathological process are revealed. The obtained results will help to understand the mechanisms of structural and functional alteration in the nasal mucosa and PNS in PRS. KEYWORDS: polypoid rhinosinusitis, cytology, histology, paranasal sinuses, smears, fibroblasts, eosinophils, leukocytes, respiratory epithelium. FOR CITATION: Zakharova N.M., Shabalova I.P., Egorov V.I. et al. Structural reconstruction of the nasal mucosa and paranasal sinuses in patients with polypous rhinosinusitis according to cytological and histological studies. Russian Medical Inquiry. 2021;5(7): 479–485 (in Russ.). DOI: 10.32364/2587-6821-2021-5-7-479-485.