Long-Term Facial Nerve Outcome in Primary Parotid Cancer Surgery: A Population-Based Analysis

Area of Science:

• Otolaryngology
• Surgical Oncology
• Neurosurgery

Background:

• Parotid gland tumors are relatively rare but can significantly impact facial nerve function.
• Facial nerve dysfunction following parotid cancer surgery can lead to considerable morbidity.
• Understanding risk factors is crucial for optimizing surgical outcomes and patient quality of life.

Purpose of the Study:

• To investigate the incidence of immediate and long-term facial nerve dysfunction after parotid cancer surgery.
• To identify independent risk factors associated with facial nerve dysfunction.
• To evaluate the role and effectiveness of facial reanimation surgery in managing these deficits.

Main Methods:

• A population-based, long-term analysis of primary parotid carcinoma cases in Thuringia, Germany (1996-2019).
• Integration of cancer registry data with hospital-based facial function assessments.
• Statistical analysis, including odds ratios and confidence intervals, to determine risk factors.

Main Results:

• Immediate postoperative facial nerve dysfunction occurred in 34.4% of patients.
• Advanced T classification and neck dissection were significant independent risk factors for immediate dysfunction.
• Permanent facial nerve dysfunction was observed in 22.0% of patients, with advanced T classification and postoperative radiotherapy as independent risk factors.

Conclusions:

• Patients with primary parotid cancer face a substantial risk of long-term facial nerve dysfunction.
• Facial reanimation surgery techniques should be more effectively employed to mitigate these functional deficits.
• Further research into preventative and reconstructive strategies is warranted.