皮膚自壊したワルチン腫瘍を伴う両側耳下腺腫瘍の1例

A case of bilateral parotid tumors with ulcerative Warthin's tumor

はじめに

　ワルチン腫瘍は中高年男性の耳下腺下極に好発する良性耳下腺腫瘍で，時に両側性，多発性に発生し，悪性化はまれとされている。悪性耳下腺腫瘍を疑う所見の1つとして，皮膚浸潤による皮膚自壊が挙げられるが，まれではあるものの皮膚自壊を伴うワルチン腫瘍例の報告もあり，鑑別を要する。今回，皮膚自壊したワルチン腫瘍を伴う両側耳下腺腫瘍の1例を経験したので報告する。

　Warthin's tumor with skin ulceration is extremely rare. It is sometimes difficult to differentiate from parotid cancer. We report a case of bilateral parotid tumors with ulcerative Warthin's tumor. A 70-year-old man was referred to our hospital with swelling of the bilateral parotid gland. A red mass was exposed from the right parotid gland with skin ulceration and exudate. Preoperative examination suggested Warthin's tumor. The tumor was completely resected with skin for diagnosis and treatment. The pathological diagnosis was a Warthin's tumor with inflammatory change.