WITHDRAWN: Comparison of the effect of total conservative parotidectomy versus superficial parotidectomy in management of benign parotid gland tumor: A systematic review

Abstract

Since of the 1940s, there has been wide controversy about the most effective surgical treatment for the primary benign parotid tumor. This review investigates the effectiveness and associated complications of superficial parotidectomy versus total conservative parotidectomy in the management of primary benign parotid tumors. An electronic search with restricted dates (1920-2014) and restricted language was performed in August 2014. Thirteen studies were included. In total, 2477 patients were enrolled in the 13 studies, with 1317 patients undergoing superficial parotidectomy and 391 patients undergoing total conservative parotidectomy; 769 patients treated with other surgical techniques were excluded. The maximum follow-up period varied between 2 and 24 years (mean 2.8 years). The incidence of recurrence in the superficial parotidectomy patients ranged from 0% to 15% (mean 5.7%), whereas, in the total conservative parotidectomy patients it ranged from 0% to 16% (mean 3.03%). The incidence of the facial nerve paresis according to collected data in the superficial parotidectomy group ranged from 0% to 23% (mean 6.75%), whereas in the total conservative parotidectomy group it was 0%-45% (mean 15%). The incidence of facial nerve paralysis in the superficial parotidectomy group ranged from 0% to 3% (mean 0.8%), whereas in the total conservative parotidectomy group it was 0%-17 % (mean 4.4%). The results of this review suggest that superficial parotidectomy is superior to total conservative parotidectomy in the management of primary benign tumor in superficial lobes. In addition, superficial parotidectomy showed a minimal recurrence rate for benign tumor in superficial lobes.