Superficial parotidectomy versus partial superficial parotidectomy in treating benign parotid tumors

The aim of the present study was to compare the outcomes of superficial parotidectomy (SP) and partial superficial parotidectomy (PSP) in treating benign parotid tumors. Individuals who had undergone SP or PSP between 2005 and 2008 were enrolled, the medical records were reviewed, and a questionnaire was created and mailed to the patients. For the statistical analysis, χ2 and non-parametric Mann-Whitney tests were used to analyze the variables. In total, 320 patients were included in the present study. Within the PSP group, immediate facial nerve weakness occurred in six patients (7.6%), and Frey's syndrome occurred in five (6.3%). Despite this, facial nerve function recovered fully during the follow-up, and recurrence was not identified. Within the SP group, Frey's syndrome occurred in 38 patients (15.8%), immediate facial nerve weakness in 55 patients (22.8%) and permanent facial nerve dysfunction in two patients (0.8%). However, no recurrence was evident. In total, 216 (67.5%) patients returned the questionnaire. Those with PSP demonstrated improved scores in the domains of appearance, facial contours, facial nerve function and Frey's syndrome. Compared with SP, PSP not only decreased the incidence of Frey's syndrome and transient facial nerve weakness, but also improved quality of life outcomes and guaranteed a low recurrence rate.