原发动脉瘤样骨囊肿的CT和MRI表现与诊断价值

CT and MRI findings of primary aneurysmal bone cyst and their diagnostic values

目的探讨原发动脉瘤样骨囊肿的CT和MRI表现与诊断价值。方法分析我院自2011年1月至2013年1月收治的38例原发动脉瘤样骨囊肿患者,均经手术病理证实。38例患者均经CT和MR两种影像学检查方法。比较两种方法的影像学表现。结果 CT、MRI两种影像学检查结果形态上、骨膜反应、关节侵犯比较差异无统计学意义(P>0.05);囊腔数目、液-液平面、病理骨折比较差异具有统计学意义(P<0.05)。结论 CT和MRI是诊断原发动脉瘤样骨囊肿的有效依据,是区分原发动脉瘤骨囊肿囊腔、液-液平面、病理骨折的重要依据。

Objective To investigate the computed tomography （CT） and magnetic resonance imaging （MRI） findings of aneurysmal bone cyst and their diagnostic values. Methods Thirty -eight patients with a pathological diagnosis of primary aneurysmal bone cyst admitted to our hospital from January 2011 to January 2013 were analyzed. The 38 patients underwent CT and MRI scans. The CT and MRI findings were compared. Results There were no significant differences in morphology, periosteal reaction, and joint involvement between CT and MRI findings （P〉0.05）, but significant differences were found in the number of cystic cavities, fluid -fluid level, and pathological fracture （P〈0.05）. Conclusion CT and MRI are effective tools for the diagnosis of primary aneurysmal bone cyst and provide an important basis for the differentiation of cystic cavities, fluid-fluid level, and pathological fracture in aneurysmal bone cyst.