Pathophysiology
The study highlights that posterior commissure stenosis frequently occurs as part of more extensive laryngeal injuries, emphasizing the role of ongoing tissue trauma from tube movement [PMID:6621231].
Epidemiology
Of primary malignant lip tumors, approximately 30% of oral malignant tumors involve the oral commissure, constituting 1-15% of these cases [PMID:40217235].
In a study of 200 patients with long-term endotracheal intubation, an overall stenosis incidence of 6% was found specifically in the posterior commissure [PMID:6621231].
Clinical Presentation
The most common cause of defects in the oral commissure area is tumor resection, highlighting the significant impact of oncological interventions on this region [PMID:40217235].
Management
This study retrospectively evaluates the use of adjacent tissue flaps in reconstructing defects of the oral commissure area following tumor resection, emphasizing their role in both functional and aesthetic outcomes [PMID:40217235].
The research suggests that modifying the endotracheal tube with a posterior air cushion can minimize ongoing trauma and potentially reduce stenosis development in long-term intubated patients [PMID:6621231].
References
1 Jia X, Xue X, Liu F, Pang P, Yue Y, Li M et al.. Functional and aesthetic evaluation of adjacent tissue flap repairing defects of oral commissure area. BMC oral health 2025. link 2 Whited RE. Posterior commissure stenosis post long-term intubation. The Laryngoscope 1983. link
2 papers cited of 3 indexed.