成釉细胞纤维瘤是包含外胚叶和外胚间叶成分的混合性牙源性肿瘤。1981年由Kruse首先报道,该肿瘤仅占全部牙源性肿瘤的2.5%。我院遇见4例均经手术病理证实,现就其临床病理改变报告如下。1　临床资料例1　女性,20岁。左上颌部包块2年,半年来逐渐增大无痛感。体检:左面部隆起,有一 Ameloblastic fibroma is a mixed odontogenic tumor that contains both ectodermal and ectoplastic components. First reported by Kruse in 1981, the tumor accounted for only 2.5% of all odontogenic tumors. In our hospital, 4 cases were confirmed by surgery and pathology, and now their clinical and pathological changes are reported as follows. 1 clinical data example 1 female, 20 years old. Left upper jaw mass 2 years, six months gradually increase painless. Physical examination: the left facial bulge, one