多中心性Warthin腫瘍の1例

抄録

Warthin's tumor is comparatively rare epitherial benign tumor of the salivary gland. Embryologically, the tumor is believed to be derived from ductal tissue that became trapped in a lymphnode, although there is also some feeling that this tumor may be multicentric in origin. A case of multicentric unilateral Warthin's tumor was experienced in a 61-year-old man who had a pigeon egg sized mass in the left parotid region. As pre-operating diagnosis was parotid gland tumor, we did a superficial parotidectomy. Microscopically, evidence of multicentric foci was sought in normal parotid gland. As a consequence the histopathologic diagnosis was multicentric Warthin's tumor. There was no sign of facial nerve paralysis or recurrence at about 6 months after the operation.