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Facial Nerve Outcomes After Infratemporal Fossa Approach Type A With Anterior Rerouting for Class C-D Tympanojugular
Yi Sun1,2, Giuseppe Fancello2,3, Melcol Hailu Yilala2,4
1Department of Otorhinolaryngology, Head and Neck Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, China.
Summary
The infratemporal fossa approach type A (IFTA) with anterior rerouting effectively treats advanced tympanojugular paragangliomas (TJPs), preserving facial nerve function in most patients. This surgical method balances tumor removal rates with acceptable facial nerve outcomes.
Area of Science:
- Neurosurgery
- Otolaryngology
- Head and Neck Surgery
Background:
- Tympanojugular paragangliomas (TJPs) are rare tumors requiring complex surgical management.
- Advanced TJP classifications (Class C-D) present significant challenges for complete resection and facial nerve preservation.
Purpose of the Study:
- To evaluate facial nerve outcomes following the infratemporal fossa approach type A (IFTA) with anterior rerouting for Class C-D TJPs.
- To assess the efficacy of IFTA in achieving total tumor removal while minimizing patient morbidity.
Main Methods:
- Retrospective analysis of medical records and follow-up data for patients with Class C-D TJPs treated with IFTA.
- Inclusion criteria focused on patients treated between 1989 and 2023 at two quaternary referral institutions.
- Facial nerve function and tumor resection rates were primary outcome measures.
Main Results:
- Out of 154 selected patients with Class C-D TJPs, 94.81% exhibited normal-to-moderately impaired facial nerve function (Grades I-III) post-surgery.
- Total tumor removal was achieved in a high percentage of cases: 86.2% for Class C1, 77.9% for Class C2, and 79.5% for Class C3-4 TJPs.
- Facial nerve function preservation was consistently high across different TJP subclassifications.
Conclusions:
- The IFTA with anterior rerouting is a suitable surgical approach for Class C-D TJP resection.
- This technique provides adequate surgical exposure, minimizing morbidity and mortality associated with these complex tumors.
- Achieving high total tumor resection rates, despite potential for temporary facial asymmetry, is crucial for reducing recurrence and complications.
