A case of Warthin's tumor in the bilateral site.

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Warthin's tumor is a relatively rare epithelial benign tumor of the salivary gland. Recently, we experienced a case of multiple Warthin's tumor in the bilateral parotid glands. A 56-year-old man visited a surgeon and underwent the operation for Warthin's tumor of the left parotid gland in 1975. In 1984 he noticed a painless mass in the left parotid gland and visited Yokohama City University Hospital. We performed left superficial parotidectomy and enucleated the mass of the deep lobe. There were two removed tumors both measuring 20 × 20mm and located in the superficial lobe and in the deep lobe respectively. The cut surface of the tumors was solid and yellowish white. A consequent histopathologic diagnosis was Warthin's tumor. In 1987 we noticed a painless mass below the right parotid gland. The clinical diagnosis was Warthin's tumor and we performed a right superficial parotidectomy. There removed were three tumors, two were 15.0 × 15.0mm in size respectively and the third was 7.0 × 7.0mm. The cut surface of these tumors was solid and yellowish white. The former (two tumors) were histopathologically diagnosed as Warthin's tumor and the latter tumor was done as normal lymph node. About 150 Warthin's tumors cases were reported in Japan between 1982 to 1987. Among them, 11 cases (7.3%) showed bilateral manifestication. No recurrence was noticed about 10 months after the operation, but we believe it is necessary to observe his postoperative course very carefully.
社団法人日本口腔外科学会の論文

A case of Warthin's tumor in the bilateral site.

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