Partial Superficial Parotidectomy With Retrograde Dissection of the Facial Nerve for Clinically “Benign” Parotid Tumors

Abstract

Background: To review experience with partial superficial parotidectomy (PSP) and retrograde dissection of the facial nerve as a treatment for benign parotid tumors. Methods: Retrospective cohort study of all patients presenting with a suspected benign primary parotid tumor undergoing parotid surgery. Results: There were 214 cases retrieved. Postoperative facial nerve weakness occurred in 33% of patients; all were temporary. Increased extent of surgical resection ( P < .001), deeper tumors ( P = .05), and close tumor proximity to the facial nerve ( P = .007) significantly correlated with postoperative facial weakness. The surgical margin was clear in 54%; 31% had capsule exposed in at least 1 point, and 13.5% had tumor at the margin. Cases with close proximity of tumor to facial nerve were more likely to have tumor at the margin ( P = .034). Conclusion: Partial superficial parotidectomy with retrograde dissection is a suitable method for benign appearing parotid tumors.