The feasibility of intranasal endoscopic microwave ablation on the removal of nasolabial cyst: Preliminary case series.

Objective: The aim of this study was to investigate the clinical effect of the removal of nasolabial cyst via intranasal endoscopic microwave ablation (MWA).

Methods: The patients with nasolabial cyst were ablated through intranasal endoscopic MWA. Postoperative pain intensity was measured via visual analogue scale (VAS), post-operative complications were recorded.

Results: Of the 31 patients with unilateral nasolabial cyst, the main complaint was a gradually increasing mass in the nasal alar and upper lip, other complaint included nasal obstruction (11/31,35.5%), localized pain (21,67.7%), and erythema (13/31,41.9%). All 31 patients were successfully treated with the intranasal endoscopic ablation technique in outpatient. The mean ablation duration was 5.86 ± 0.71 min. The mean VAS pain score was 2.36 ± 1.08 on postoperative. None of infection occurred. All the patients complained of mild numbness in the upper lip with an average last duration of 28.5 ± 7.9 h in patients. In addition, 4 (12.9%) patients had facial/perinasal swelling, acid bilge of maxillary teeth in 7(22.6%), and toothache in one (3.2%). The patients were followed up for 12 months without recurrence and oronasal fistula. The nasolabial cyst had integrated into a part of the nasal cavity.

Conclusions: The intranasal endoscopic MWA is feasible and alternative to conventional transoral sublabial approach for removal of the nasolabial cysts in outpatient.