患者　男 ,5岁。右面部无痛性肿块进行性增大 4个月。查体 :右面部明显肿大 ,范围约 6ｃｍ× 5ｃｍ ,皮肤色泽基本正常 ,右颌下 3ｃｍ× 4ｃｍ大小肿块 ,边界不清 ,活动度小 ,触痛明显 ,牙齿无松动 ,颈部未触及明显肿大淋巴结。外院ＣＴ诊断为牙源性纤维瘤可能。入院后摄下颌骨 Patient male, 5 years old. The right facial painless mass increased 4 months. Physical examination: the right facial obvious swelling, the range of about 6cm × 5cm, the skin color is normal, the right mandibular 3cm × 4cm size of the tumor, the border is not clear, the activity is small, obvious tenderness, no loosening of the teeth, the neck did not touch obvious Swollen lymph nodes. Outside the hospital CT diagnosis of odontogenic fibroma may. After admission, the mandible was taken