Table 5 Symptoms of ISSOs patients.

From: Isolated sphenoid sinus opacification is often asymptomatic and is not referred for otolaryngology consultation

Asymptomatic

167 (74.9%)

Symptomatic

Headache

22 (9.9%)

Dizziness

12 (5.4%)

Face/eye pain

4 (1.8%)

Post nasal drip

2 (0.9%)

Diplopia

2 (0.9%)

Others

16 (7.2%)

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