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Delayed facial palsy after tympanomastoid surgery: A report of 15 cases
Peng Xu1, Weiwei Liu1, Wenna Zuo1
1Department of Otolaryngology, Cangzhou Central Hospital, Cangzhou, Hebei Province, People's Republic of China.
Objective:
To analyze potential etiology and outcomes of delayed facial palsy (DFP) after tympanomastoid surgery.
Methods:
Fifteen cases of DFP out of 1582 cases after tympanomastoid surgery were reviewed, and the potential causes and outcomes were analyzed.
Results:
9 out of 15 patients (60%) had fallopian canal dehiscence and facial nerve exposure in contrast to 323 of 1567 patients (20.6%) without DFP, with significant difference (P<0.01). Chorda tympani was cut or overstretched in 4 cases. There were two cases with herpes labialis and IgM antibody against varicella-zoster virus. All patients fully recovered within two months.
Conclusion:
Fallopian canal dehiscence and facial nerve exposure was a risk factor of DFP after tympanomastoid surgery, and chorda tympani injury and viral reactivation may be triggering factors of DFP. The outcomes DFP after tympanomastoid surgery were excellent.
