动脉瘤样骨囊肿的CT及MRI诊断(附21例报告)

目的分析动脉瘤样骨囊肿的CT及MR I表现,评价其影像学诊断价值。方法回顾分析21例经手术或穿刺证实的动脉瘤样骨囊肿的CT及MR I表现。结果病变在CT上有16例可见明显液-液平面,其上缘CT值低于下部,其中继发性动脉瘤样骨囊肿可见明显软组织肿块,而MR I图像上除1例继发性动脉瘤样骨囊肿未见明显液-液平面以外,其它20例均有明显液-液平面。且继发性动脉瘤样骨囊肿的软组织肿块显示得更加清楚。结论动脉瘤样骨囊肿大部分病例在CT和MR I上出现有液-液平面,具有一定特征性,但不是惟一性。

Aneurysmal Bone Cyst:CT and MRI Diagnosis:A Report of 21 Cases

Objective To analyze CT and MRI manifestations of the aneurysmal bone cyst and to evaluate the value of its imaging diagnosis.Methods The manifestations of CT and MRI of the aneurysmal bone cyst confirmed by operation or puncture were analysed retrospectively.Results On CT images,there were obvious liqued-liqued level within the lesions in 16 cases,in which,the CT values in up part was lower than that in low part,and there were obvious soft tissue mass in secondary aneurysmal bone cyst.While,on MRI,all lesions appeared obvious liqued-liqued level except one secondary example,and the soft tissue mass of secondary aneurysmal bone cyst was clear showed.Conclusion Most of aneurysmal bone cyst appear liqued-liqued level within the lesions on CT and MRI,it is a characteristic sign,but not the only one.