骨良性纤维组织细胞瘤(Benign fibrous histocytoma,BFH)是来源于间叶细胞的良性肿瘤,主要发生在四肢的皮肤[1],也可发生在股骨,胫骨,髂骨[2]。发生在颌骨的BFH很少,我科于2008年9月收治1例。患者,女性,41岁,无意中发现下颌肿大1月余,查体见双侧 Benign fibrous histocytoma (Benign fibrous histocytoma, BFH) is a benign tumor derived from mesenchymal cells. It mainly occurs in the skin of extremities [1], and can also occur in the femur, tibia, ilium [2]. Few BFH occurred in the jaw bone, our department in September 2008 admitted to 1 case. Patients, women, 41 years old, inadvertently found more than 1 month mandibular enlargement, physical examination found bilateral