Table 1.

Score for semi quantitative evaluation of the endoscopic images of the nasopharyngeal orifice of the ET

Criteria	Endoscopic score value
	None	Mild	Moderate	Severe
Quality of mucus	0	1	2	3
Opening degree of n. orificea	0	1	2	3
Inflammatory erythema	0	1	2	3
Inflammatory swelling	0	1	2	3