The patient underwent left parotid mass resection and histology revealed:

The sections show a pleomorphic adenoma composed of confluent cords, nests and a myxoid stroma with focal evidence of benign cartilage formation. Focally there is also squamous metaplasia. In areas at the periphery of the lesion, there are fibrous capsules of varying thicknesses. A small amount of unremarkable salivary tissue is present at one edge of one fragment.

Final diagnosis: pleomorphic adenoma.