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Temporary facial nerve dysfunction after parotidectomy correlates with tumor location
Ryo Ikoma1, Junichi Ishitoya1, Yasunori Sakuma1
1Department of Otolaryngology, Yokohama City University Medical Center, Urafune-cho 4-57, Minami-ku, Yokohama 232-0024, Japan.
Auris, Nasus, Larynx
|June 3, 2014
Summary
Tumor location in the parotid gland significantly impacts the risk of temporary facial nerve dysfunction (TFND) after surgery. Tumors in the upper, anterior, or deep parotid gland areas are associated with higher TFND incidence.
Area of Science:
- Otolaryngology
- Neurosurgery
- Oncology
Background:
- Benign parotid gland tumors are common, and surgery carries a risk of temporary facial nerve dysfunction (TFND).
- Identifying factors predicting TFND is crucial for surgical planning and patient counseling.
Purpose of the Study:
- To investigate clinical factors associated with temporary facial nerve dysfunction (TFND) following surgery for benign parotid gland tumors.
- To determine if tumor location within the parotid gland influences TFND risk.
Main Methods:
- Retrospective review of 175 patients undergoing partial parotidectomy for benign tumors.
- Utilized MRI to define tumor location (upper/lower, anterior/posterior, superficial/deep lobes).
- Analyzed associations between TFND and patient age, tumor size, histopathology, and precise tumor location.
Main Results:
- TFND occurred in 18.9% of patients.
- Tumors in the upper, anterior, or deep parotid gland lobes showed significantly higher TFND rates (P<0.001, P<0.001, P<0.01).
- Multivariate analysis confirmed upper, anterior, and deep lobe locations as significant risk factors for TFND; age, size, and histopathology were not significant predictors.
Conclusions:
- Parotid gland tumors located in the upper, anterior, or deep lobes are associated with an increased risk of TFND.
- The proposed MRI-based method for defining tumor location effectively identifies TFND risk.
