Partial Superficial Parotidectomy With Retrograde Dissection of the Facial Nerve for Clinically "Benign" Parotid Tumors.

Abstract

To review experience with partial superficial parotidectomy (PSP) and retrograde dissection of the facial nerve as a treatment for benign parotid tumors. Retrospective cohort study of all patients presenting with a suspected benign primary parotid tumor undergoing parotid surgery. 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). Partial superficial parotidectomy with retrograde dissection is a suitable method for benign appearing parotid tumors.