Table 3.

Patients’ postoperative condition.

Patient number	Follow-up time	VAS score of forehead pain	Frontal sinus drainage pathway (paranasal sinus CT)	Lund–Kennedy endoscopic mucosal score
1	2 weeks	0	Open	2
	6 months	0	Open	0
	12 months	0	Open	0
	24 months	0	Open	0
2	2 weeks	1	Open	2
	6 months	1	Open	1
	12 months	0	Open	0
	24 months	1	Open	1
3	2 weeks	0	Open	1
	6 months	0	Open	1
	12 months	0	Open	0
	24 months	Follow-up in progress	Follow-up in progress	Follow-up in progress