Stationary facial nerve paresis after surgery for recurrent parotid pleomorphic adenoma: a follow-up study of 219 cases in Denmark in the period 1985–2012

Abstract

The purpose was to assess degree of permanent facial nerve dysfunction after surgery for recurrent pleomorphic adenoma (RPA) of the parotid gland, including variables that might influence re-operation outcomes. Nationwide retrospective longitudinal cohort study including a questionnaire survey of patients undergoing surgery for RPA. Of 219 living patients, 198 (92 %) responded and 127 (63 %) reported no facial dysfunction. Statistically significant associations were found between number of surgeries and permanent facial nerve dysfunction of all degrees (OR 1.43, 95 % CI 1.16–1.78, p = 0.001). A not significant tendency for females to be associated with worse outcome was found (p = 0.073). Risks of different degrees of paresis after the second–fourth surgeries were found (OR 1.86–2.19, p < 0.05). Our study demonstrates a significant correlation between number of surgeries for RPA of the parotid and severity of facial nerve paresis. This is important when informing and planning treatment of these patients.

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