颌骨成釉细胞瘤仅占颌骨全部肿瘤的1%,来自于成齿上皮,虽切除后局部复发率高,但组织学一般显示为良性,且很少转移。转移至肺者极少,英语文献中经组织学证实者仅16例。本文报告1例下颌骨成釉细胞瘤肺转移的病例,强调了X 线的发现和对原发灶恰当的治疗以防止转移的重要性。患者男性、21岁,6岁时曾行右下颌成釉细胞瘤切除。4年后局部复发又做了切除。二次手术后8年 Jawbone ameloblastomas only account for 1% of all jawbone tumors and are derived from gingival epithelium. Although the rate of local recurrence after resection is high, histology generally appears to be benign and rarely metastatic. Few patients were transferred to the lungs. Only 16 cases were confirmed by histology in the English literature. This article reports one case of mandibular ameloblastoma lung metastases, highlighting the importance of X-ray findings and proper treatment of primary lesions to prevent metastasis. Male patients, 21 years old, and 6 years old had a right temporomandibular ameloblastoma resection. Local recurrence was performed again after 4 years. Eight years after the second surgery