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患者男,22岁,左踝关节肿痛4年,距骨前外侧面可触及凸起硬结。Ｘ线检查见左踝关节(正侧位片)距骨前外侧可见一30ｃｍ×20ｃｍ囊状密度不均匀透亮区,隐约有少数骨嵴,骨皮质膨胀变薄,骨壳突向骨旁软组织内,踝关节间隙无变窄。Ｘ线诊断:①动脉瘤样骨囊肿;②骨囊肿(图1)。ＣＴ检查:?
The patient was a 22-year-old man with a swelling and pain of the left ankle for 4 years. His anterior talus was palpable with an induration. X-ray examination showed left ankle joint (positive lateral view) visible 30cm × 20cm anterolateral talus cystic density of non-uniform translucent area, a small number of vague lame bone, cortical bone expansion and thinning, sudden protrusion of bone into the soft tissue, There is no narrowing of the ankle gap. X-ray diagnosis: 1 aneurysmal bone cyst; 2 bone cyst (Figure 1). CT examination:?