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Endoscopic transoral approach to the lateral poststyloid space
Lifeng Li1, Hongbo Xu1, Nyall R London2
1Department of Otolaryngology - Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
Head & Neck
|November 5, 2022
Summary
This study demonstrates that an endoscopic transoral approach provides direct access to the lateral poststyloid space (LPSS). This method allows for safe and effective tumor resection in the LPSS with no observed recurrence.
Area of Science:
- Head and Neck Surgery
- Anatomical Studies
- Endoscopic Procedures
Background:
- The lateral poststyloid space (LPSS) is a critical anatomical region.
- Lesions in the LPSS pose surgical challenges due to limited access.
- Understanding LPSS anatomy is crucial for effective treatment.
Purpose of the Study:
- To explore the anatomical relationships within the LPSS using a transoral corridor.
- To evaluate the feasibility and safety of an endoscopic transoral approach for LPSS lesions.
- To provide anatomical references for surgical interventions in the LPSS.
Main Methods:
- An endoscopic transoral approach was performed on 6 cadaveric specimens (12 sides).
- Anatomical landmarks within the LPSS were identified.
- Transoral tumor extirpation was performed in 12 patients with LPSS tumors.
Main Results:
- The endoscopic transoral corridor provided sufficient exposure of the deep lobe of the parotid gland, extratemporal facial nerve, and associated artery.
- En bloc tumor resection was successfully achieved in all 12 patients.
- No facial nerve or vascular injuries were reported, with no recurrence at an average 26-month follow-up.
Conclusions:
- The endoscopic transoral approach offers direct and safe access to the LPSS.
- Detailed anatomical knowledge of the LPSS is essential for successful transoral tumor extirpation.
- This approach is effective for managing tumors extending into the lateral poststyloid space.

