神经纤维瘤和神经纤维肉瘤发生在软组织中多见,但原发于骨内的甚为罕见。我院收治一例左胫骨上端神经纤维肉瘤患者,报告如下。患者,男性、20岁,学生,左小腿上端肿胀、疼痛二个多月入院。起病时疼痛较轻,经局部封闭后肿疼加重,膝关节伸直时有疼,局部皮肤不红,无发烧史。查体:一 Neurofibromatosis and neurofibrosarcoma occur more often in soft tissues, but it is rare in the bone. In our hospital, one patient with left upper tibial nerve fibrosarcoma was treated as reported below. The patient, male, 20 years old, had a swelling in the upper left leg and pain in the hospital for more than two months. The onset of pain was lighter, swelling pain was worsened after partial closure, there was pain when the knee was straight, there was no reddening of the local skin, and no history of fever. Physical examination: one