Malignant epithelial parotid tumours: A rational treatment policy

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Abstract
Formal parotidectomy was undertaken in 271 patients by one surgeon over 11 years. Forty patients were treated for malignant salivary tumours (nine were recurrent). Low grade tumours (45 per cent) were treated by surgery alone, untreated high-grade tumours (55 per cent) by surgery and radiotherapy, before or after operation, depending on clinical findings. The aims of surgery were to obtain tumour clearance, to preserve the facial nerve if possible, and to perform radical neck dissection for palpable malignant lymphadenopathy proven cytologically and for high-grade tumours when intraoperative jugulodigastric lymph node biopsy confirmed metastasis. Four patients sustained facial weakness as a result of surgery. At a median of 46 months follow-up two patients had developed local recurrence. Eleven patients with high-grade but none with low-grade tumours died from metastases. Patients with high-grade lesions with facial weakness from malignant infiltration and those with lymphatic metastasis have a significantly worse prognosis than those without. Locoregional control of parotid cancers can be achieved by formal parotidectomy and selective irradiation without routine sacrifice of the facial nerve.

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