Abstract
A case of simultaneous pleomorphic adenomas of the right parotid and ipsilateral submandibular glands was reported. The patient was a 68-year-old woman who had a ten-year history of an otherwise asymptomatic non-enlarging mass in the parotid gland and a slowly enlarging mass in the submandibular gland. Microscopically, the parotid tumor consisted of predominant spindle-shaped cell proliferations with myxoid stroma in places. The submandibular gland tumor showed tubular and trabecular formations with stroma consisting of hyalinized fibrous connective tissues. Simultaneous pleomorphic adenomas in the salivary glands are so rare that only 23 cases can be found in the literature. Additionally, only five tumors occurring simultaneously in the parotid and submandibular glands are reported in the literature. Our case seems to be the sixth of simultaneous pleomorphic adenomas of the parotid and submandibular glands.
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