Abstract
Many kinds of neoplasms of the parotid glands are recognized. They are classified chiefly by their histopathological type. Sometimes, however, it is very useful to classify them according to their location. This report describes such a case.A 50-year-old man had a 1-month history of painless swelling in the left parotid region, On physical examination, there was a diffuse swelling in the left parotid region, but no facial palsy. Sialography and CT scan revealed a tumor in the left parotid gland. Operation was recommended, but the patient refused. Two years later, CT scan and MRI revealed slight growth of the tumor, so operation was recommended again. The patient finally agreed, and left parotidectomy with preservation of the facial nerve was performed. Histopathological examination revealed that the tumor was present only in the dilated excretory duct of parotid gland, and that it was a papillary adenocarcinoma. More than 20 months after the operation, ther is no evidence of recurrence.
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