International Session 24 　　Malignant Tumors 3

Aim: Cases of primary paraglottic space tumors are exceedingly rare, and exist mainly as case reports.We aim to summarize the existing cases of primary paraglottic tumors. Materials and methodsA scoping review on paraglottic space tumors was conducted.Results: The literature search found 28 reports of primary paraglottic space tumours.Most primary paraglottic space tumours present with dysphonia(48)and the commonest histology was schwannoma(28)and lipoma(24) .Surgical outcomes were inconsistently reported, of which only our case was complicated by chronic inspiratory stridor.A total of 7 cases had delayed voice recovery.No swallowing complications were reported.Neurofibromas result in higher risks of nerve injury, recurrence and malignant change than schwannomas.Detachment and removal of part of the thyroid cartilage during surgery may cause dehiscence of the vocal cord from the laryngeal framework hence affect cord mobility.Intraoperative prophylactic resuspension of the vocal cord to the remnant laryngeal framework may reduce risk of airway complications. Conclusion:The surgical approaches and outcomes of primary paraglottic tumors are summarised.