Combined transnasal/transoral endoscopic odontoid resection in pediatric patients: Otolaryngologic considerations to airway management, endoscopic exposure, and complication management.

Abstract

Anterior brainstem compression from odontoid pathology can occur in patients with craniocervical disorders. Occasionally, odontoid resection is required. In adults, odontoid resection has evolved toward transnasal-only endoscopic techniques. Pediatric patients, however, pose special challenges due to abnormal anatomy and smaller working spaces. A combined transnasal/transoral endoscopic odontoid resection (TN/TO EOR) can overcome this limitation. We present a case series with emphasis on otolaryngologic considerations to airway management, endoscopic approach, and management of complications. A single center, retrospective review of patients aged ≤18 undergoing combined transnasal/transoral endoscopic odontoid resection between 2011 and 2022 is presented. Clinical and surgical variables consisting of diagnosis, intubation approach, other airway procedures performed, symptoms, complications, blood loss, and time to extubation, return to oral feeding, and discharge were recorded. 19 patients aged 10.7±4.3 (range: 3-18) were included. Diagnoses included congenital syndrome (n=6), complex Chiari malformation (n=11), and congenital syndrome with Chiari (n=2). Patients commonly required indirect videolaryngoscopy for intubation, with or without fiberoptic endoscopic assistance. Seven underwent adenoidectomy, two underwent adenotonsillectomy, and one required adenoidectomy with midline palatal split and inferior turbinate outfracture. Four patients had undergone prior adenotonsillectomy. Presenting symptoms included extremity weakness (n=9), dysphagia (n=8), velopharyngeal insufficiency (n=4), sleep disturbance (n=5), and headaches (n=8). Four patients had complications, including one re-operation for residual odontoid, one flap dehiscence, one cerebrospinal fluid (CSF) leak repaired primarily, and one complicated course including temporary spinal cord injury. Blood loss was 50±43cc (median 30). Time to extubation was 1.1±2.1 days (median 0; one patient underwent tracheotomy for respiratory failure), time to oral intake was 2.9±3.7 days (median 1), and time to discharge was 7.1±7.5 days (median 4). A combined transnasal/transoral approach can be successfully used in pediatric patients to overcome difficult endoscopic access. Although complications exist, early extubation and return to oral intake occurs in the vast majority of cases. For pediatric TN/TO EOR, the otolaryngologist plays a key role in preoperative assessment, airway management, endoscopic exposure, and complication management.