骨化性纤维瘤多见于颌骨 ,发生于颌骨以外骨者较少见[1] 。本文对 8例经手术、病理证实的颌外骨化性纤维瘤的Ｘ线诊断分析如下。1　临床资料1.1　一般资料　男 4例 ,女 4例。年龄 8～ 5 8岁。有肿痛者 3例 ,其余 5例为偶而发现肿块 ,其中 2例发现肿块后 5年方就医。部位 :胫骨 Ossifying fibroids more common in the jaw, occurred in the jaw bone outside the less common [1]. In this paper, 8 cases of pathologically confirmed jaw ossifying fibroids X-ray diagnosis is as follows. 1 Clinical data 1.1 General Information 4 males and 4 females. Age 8 ~ 5 8 years old. There are 3 cases of swelling and pain, and the remaining 5 cases were found occasionally, of which 2 cases were found to be medical 5 years after the mass. Site: Tibia