抄録
We experienced and treated a 3-year-old boy with mucoepidermoid carcinoma arising from the left side submandibular gland. The child visited our clinic with his mother via the pediatric clinic of the hospital, because of swelling in the submandibular region. At first the lesion was doubted to be some inflammatory origin, but through the biopsy it was diagnosed as mucoepidermoid carcinoma histologically. We carried out an en bloc operation of the tumor excision and total neck dissection of the left side. The postoperative course was uneventful and he was discharged two months and a half later. An ambulatory examination of the patient showed us no sign of the recurrence and no local or distant metastasis for over six years, while the child received administrations of 5-FU dry syrup orally and OK-432 i. s. c. for 11 months.