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目的评价 CT 扫描在诊断肾血管平滑肌脂肪瘤(angiomyolipoma,AML)中的价值。方法对我院自1997年8月至2003年8月共收治的8例经手术病理证实的 AML 患者进行回顾性分析总结。结果本组8例均不伴结节硬化症,多见于女性,7例单侧发病,1例双侧发病,1例单侧多发,4例合并破裂出血。CT 表现为圆形、椭圆形肿块,边界清楚,密度不均,内含软组织与脂肪密度成分,多以低密度脂肪为主,无强化,软组织部分及条状分隔均有不同程度强化。少脂肪 AML 用 CT 亦能作出诊断。结论 CT 对 AML 及瘤内破裂出血可以作出定性定位诊断。少或无脂肪成分的 AML 应结合 B 超及薄层扫描技术和像素 CT 值显示,有助于鉴别诊断。
Objective To evaluate the value of CT scanning in the diagnosis of angiomyolipoma (AML). Methods A retrospective analysis was made on 8 cases of pathologically confirmed AML in our hospital from August 1997 to August 2003. Results None of the 8 patients had nodular sclerosis. More common in women, 7 were unilateral, 1 had bilateral disease, 1 had unilateral multiple, and 4 had combined hemorrhage. CT showed a round, oval mass, clear boundaries, uneven density, containing soft tissue and fat density components, mostly low-density fat-based, no strengthening, soft tissue parts and strip separation are enhanced to varying degrees. Fatty AML with CT can make a diagnosis. Conclusion CT can diagnose AML and rupture of aneurysm qualitatively. AML with low or no fat content should be combined with B-scan and thin-layer CT scan technology and pixel CT value, contribute to the differential diagnosis.