Abstract
●A functioning facial nerve is a critical structure that limits the margin of resection in parotid malignancies. There was no difference in disease-free survival with close or negative resection margins. ●Microscopic positive (R1) resection margins were associated with poorer disease free survival, but this was not statistically significant, implying that more functional and less radical surgery may be acceptable when followed by adjuvant therapy. ●Perineural invasion was found in 37% of tumours ●Five-year overall and disease-free survival were 82% and 71%. ●Age >50, pT classification 3-4, higher tumour grade, perineural invasion, and advanced TNM stage were all associated with worse overall and disease-free survival.
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