The new histologic classification of chronic rhinosinusitis

Area of Science:

• Otolaryngology
• Pathology

Background:

• Chronic rhinosinusitis (CRS) is a complex inflammatory condition of the upper airway.
• Current understanding of CRS lacks a detailed histologic classification.
• Histologic findings are crucial for understanding disease mechanisms.

Purpose of the Study:

• To present evidence for two distinct histologic patterns in chronic rhinosinusitis.
• To link these histologic patterns to underlying pathophysiologic processes.
• To advocate for the clinical and research acknowledgment of this histologic classification.

Main Methods:

• Review of existing literature and clinical data.
• Histologic examination of sinonasal tissue samples.
• Correlation of histologic findings with clinical presentation and disease drivers.

Main Results:

• Identification of two primary histologic patterns in CRS.
• Pattern 1: Eosinophilia and polypoid changes.
• Pattern 2: Glandular hyperplasia and hypertrophy.

Conclusions:

• A distinct histologic classification for chronic rhinosinusitis is supported by evidence.
• These patterns correlate with different pathophysiologic mechanisms.
• Clinical and research settings should adopt this histologic classification for improved management and study of CRS.