Key points: • Intraoral, sublabial, and transnasal endoscopic approachs are used to manage odontogenic maxillary cysts. • Transnasal endoscopic approach includes inferior meatal antrostomy, middle meatal antrostomy, and endoscopic medial maxillectomy approach. • Trans-antral endoscopic assisted excision of odontogenic maxillary cyst approach have the advantage of direct lesion access of the sublabial approach as well as the advantages of better illumination, magnification, and small access of endoscopic approach. • The trans-antral endoscopic assisted approach co-morbitity seems to be the least comparing to the benefit of complete excision of the cyst within its entire wall in all the cases with minimal injury of the unaffected maxillary sinus mucosa as well as avoidance of injury of any nearby structure if there is defect in the sinus wall.

Abstract Purpose: to evaluate the safety and the efficacy of a modified Z-palatoplasty (ZPP) technique in management of post-surgical nasopharyngeal stenosis (NPS), describing its steps and results. Methods: This prospective study was conducted on patients with snoring± OSA due to acquired post-surgical NPS of grade Ι and ΙΙ. Surgical repair using a modified ZPP was employed on the patients and the pre and postoperative results were statistically compared and adverse events were recorded. Results: The grade of NPS improved significantly postoperatively (p= 0.00136) throughout a follow up of one year. Postoperatively, there was statistically significant improvement of AHI (p= 0.0005), VAS of nasal obstruction (p<0.0001) and VAS of snoring (p<0.0001). While transient VPI and dysphagia disappeared within 3 months postoperatively. Conclusion: The utilized procedure appears fast, low cost, and easily applicable, and it does not require implants, special tools or suture materials. Furthermore, it gives promising results, with tolerable pain, and rapid recovery without significant or persistent complications.