1.From 1980 to 2014, 745 consecutive patients were undergoing parotid surgery in our institution and 90 (12%) were diagnosed with a malignant tumour, with primary lymphoma of the parotid gland being diagnosed in 19 patients (21.1% of all malignant tumours and 2.6% of all parotidectomies).
2.Follicular lymphoma (n=9) was the most common histological type, followed by marginal cell lymphoma (n=7). The majority of cases were low grade lymphoma.
3.There are no distinguishing clinical or radiological features to help identify these cases as primary lymphoma before surgery. There was no history of Sjogren's syndrome or other auto-immune conditions, and no reported B-symptoms.
4.With 17 out of 19 patients (89%) being disease-free after 72 months or longer, surgery may be considered as a single curative option in low grade lymphoma of the parotid gland.
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