A case of Warthin's tumor extending to the parapharyngeal space from the deep lobe of the parotid gland.

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We report a case of Warthin's tumor which arose from the deep lobe of the parotid gland and extended to the parapharygeal space. A 56-year-old male was admitted because of a vague feeling of the left pharynx. MRI and CT were performed because he had lost consciousness transiently 20 days before. Examination revealed that the tumor extended from the deep lobe of the left parotid gland into the parapharyngeal space. The clinical diagnosis was a parapharyngeal tumor arising from the deep lobe of parotid gland. The tumor was surgically removed without complications by an external approach. The histopathological diagnosis was Warthin's tumor. Warthin's tumor, classified as a monomorphic adenoma, represents 4.5% to 11% of all parotid gland tumors. Warthin's tumors generally arise from the superficial lobe of the parotid gland but about 10% arise from the deep lobe.
社団法人日本口腔外科学会の論文