患者　男 ,5 7岁。 3 0年前行颈部神经纤维瘤术前检查时发现右侧第 7后肋骨病变。后多次拍片复查肋骨病变无变化。现X线片示右第 7后肋骨 3cm× 4cm高密度灶 ,呈膨胀性生长 ,其内密度不均 (图 1) ,CT平扫显示沿肋骨长轴向肺野侧膨胀性生长骨破坏区 ,内可见细小骨嵴。病灶边缘无 Patient male, 57 years old. 30 years ago cervical neurofibroma preoperative examination found the right seventh posterior rib lesion. After multiple film review rib lesions no change. Now X-ray showed the right 7th posterior ribs 3cm × 4cm high-density lesions, was swollen growth, the density is uneven (Figure 1), CT plain scan along the long axis of the lung to the lung expansion of bone destruction area, Small bone crest visible. No lesions at the edge