悪性との鑑別が困難であったワルチン腫よう例

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  • A Pseudo-Malignant Warthin's Tumor with Inflammatory Changes.

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We report a pseudo-malignant Warthin's tumor with inflammatory changes. A 25 year-old man had been complaining of a painless right sub-auricular swelling for 2 years and 6 months. On examination, there was a 3.5×3.5cm firm mass in the right parotid region, fixed deeply but not to the skin. There was no associated lymphadenopathy. Magnetic resonance imaging of the area revealed a mass of mixed intensity in the right parotid gland involving both the superficial and deep lobes and extending beyond the confines of the capsule. A clinical diagnosis of a malignant parotid tumor was made. A total parotidectomy was performed sacrificing of a buccal branch of the facial nerve. A peroperative frozen section of the tissue was read as an abscess. However postoperative histological examination showed a Warthin's tumor with severe inflammation, partial fibrosis and necrosis. There was no evidence of malignancy.

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