Anosmia and chronic sinus disease

Area of Science:

• Otolaryngology
• Rhinology
• Olfactory dysfunction

Background:

• Chronic sinus disease and progressive mucosal disease frequently cause anosmia (loss of smell).
• Achieving long-term relief from anosmia, even with comprehensive treatments, remains challenging.
• Anosmia significantly impacts quality of life, necessitating effective treatment strategies.

Purpose of the Study:

• To evaluate the efficacy of endoscopic sinus surgery in patients with anosmia and chronic sinusitis.
• To identify factors predicting long-term olfactory improvement after surgery.
• To correlate subjective smell improvement with objective olfactory testing.

Main Methods:

• Fifty patients with subjective anosmia and progressive sinusitis underwent endoscopic sinus surgery.
• Preoperative and postoperative data, including historical, clinical, and radiological findings, were analyzed.
• Olfactory function was assessed using subjective reports and the University of Pennsylvania Smell Identification Test (UPSIT).

Main Results:

• 52% of patients reported significant smell improvement post-surgery, correlating with UPSIT results.
• The remaining patients experienced intermittent improvement or persistent hyposmia/anosmia.
• Severe presenting sinus disease (Kennedy stage II or beyond ethmoids) and persistent postoperative mucosal disease were associated with persistent anosmia (p = 0.005).

Conclusions:

• Endoscopic sinus surgery can provide significant olfactory improvement for a subset of patients with chronic anosmia.
• Disease severity and persistent inflammation post-surgery are critical factors in determining long-term olfactory outcomes.
• Further research is needed to optimize surgical and medical management for refractory anosmia.