[Differentiation between allergic rhinitis and vasomotor rhinitis. Light and electron microscopic studies]

Area of Science:

• Otorhinolaryngology
• Pathology
• Immunology

Background:

• Allergic rhinitis and vasomotor rhinitis are common nasal conditions.
• Both conditions affect the nasal mucosa, leading to symptoms like congestion and rhinorrhea.
• Understanding the distinct pathological changes is crucial for accurate diagnosis and treatment.

Purpose of the Study:

• To compare the pathological changes in nasal mucosa between allergic rhinitis and vasomotor rhinitis.
• To identify key differences in cellular infiltration and vascular damage.

Main Methods:

• Histopathological examination of nasal mucosa samples.
• Observation of vascular and glandular changes.
• Analysis of cellular infiltration patterns.

Main Results:

• Both conditions exhibited vascular dilatation, increased permeability, and glandular proliferation.
• Allergic rhinitis showed significantly higher cellular infiltration, including eosinophils, basophils, neutrophils, mast cells, and plasma cells.
• Capillary wall gap formation was observed in allergic rhinitis but not in vasomotor rhinitis.

Conclusions:

• Pathological differences between allergic and vasomotor rhinitis are primarily related to the type and extent of cellular infiltration and vascular wall integrity.
• These findings highlight distinct pathophysiological mechanisms underlying the two conditions.