纤维黄色瘤发生在骨骼上极为罕见。我们收治1例发生于枢椎椎体并致齿状突病理性骨折的纤维黄色瘤，经手术病理证实，现报告如下。患者，男，30岁。因颈部疼痛1个月、颈部活动困难20天，于1992年10月14日入院。起病前无外伤史，体检：头颈左偏、双手托颏，痛苦表情。双侧颈项肌? Fibrous xanthomas are extremely rare on bones. We treated a patient with fibroid xenograft who developed a pathological fracture of the vertebral body and caused an odontoid process. This was confirmed by surgery and pathology. The report is as follows. Patient, male, 30 years old. He was admitted to the hospital on October 14, 1992 due to neck pain for 1 month and difficulty in neck activity for 20 days. There was no history of trauma before the onset of illness. The physical examination included left and right head and neck, squatting on both hands and painful expression. Bilateral cervical muscle?