1病例介绍病人女性,53岁,右下肢浮肿、肿痛半年,并逐渐加重来本院就诊。2X线所见右踝关节侧位平片见右距骨上缘生长背向关节生长,窄基底,大小约0.7cm×1.7cm×3.2cm,状如“磨菇”不规则密度增高影,其内可见软骨性不规则透亮区,无斑点状钙化。骨皮质自距骨延续至肿瘤远端,并逐渐 1 case description Female patient, aged 53, right lower extremity edema, swelling and pain for six months, and gradually increased to our hospital. 2X line seen in the right ankle lateral plain film see the growth of the right talus on the edge of the back of the joint growth, narrow base, the size of about 0.7cm × 1.7cm × 3.2cm, shaped like “mushrooms” irregular density increased shadow, which within Visible cartilage irregular translucent area, no spot-like calcification. Cortical bone extends from the talus to the distal tumor, and gradually