Table 1. Patient clinical characteristics

Pt no	Age (y)/ gender	Clinical symptoms	With NP	Underlying disease	Involved sinus	F/U (mon)	Recurrence
1	77/F	Facial pain	N	Hypertension	Lt. MS	5	None
2	70/F	Nasal stuffiness, foul odour	Y	Diabetes	Lt. MS	5	None
3	59/F	Facial pain	N	None	Lt. MS	11	None
4	75/F	Facial pain	Y	Hypertension	Lt. MS	13	None
5	48/M	Nasal stuffiness, postnasal drip	Y	None	Rt. MS	8	None
6	68/F	Nasal stuffiness, postnasal drip	Y	None	Rt. MS	12	None
7	67/F	Foul odour, postnasal drip	N	None	Lt. MS	17	None
8	67/F	Foul odour, postnasal drip	N	Diabetes	Lt. MS	10	None
9	60/M	Nasal stuffiness, postnasal drip	Y	None	Lt. MS	24	None

All patients were treated with endoscopic sinus surgery alone and all survived.
Pt no: patient number, y: year, mon: month, F/U: follow up, F: female, Lt: center, MS: maxillary sinus, M: male, Rt: right, NP: nasal polyp.