-
肾血管平滑肌脂肪瘤(angiomyolipoma, AML)是临床常见的肾脏良性肿瘤, 病理上为一种无包膜的错构瘤性肿块, 又称肾错构瘤。超声检查、CT、MRI是诊断本病的主要手段。
肾血管平滑肌脂肪瘤的影像学表现
Imaging manifestation of renal angiomyolipoma
-
摘要:
目的 探讨肾血管平滑肌脂肪瘤(AML)的影像特征,提高其诊断准确率。 方法 收集36例肾AML患者的超声、CT、MRI资料,分析其各自的影像特点。 结果 超声诊断准确率为63.8%,CT诊断准确率为86.1%,MRI诊断准确率为91.7%。 结论 超声、CT、MRI都能确定肾AML的大小、形态、位置和毗邻关系,但MRI更能准确地诊断其内部组织成分及少量出血,并能和肾脂肪瘤、分化好的脂肪肉瘤、肾癌等鉴别,使本病的诊断准确率明显提高。 -
关键词:
- 超声检查 /
- 体层摄影术, 螺旋计算机 /
- 磁共振成像 /
- 肾血管平滑肌脂肪瘤
Abstract:Objective To improve the accuracy of diagnosis by studying the imaging manifestation of renal angiomyolipoma(AML). Methods Cellected the ultrasonic, CT, MRI data of 36 cases renal AML, analysed the imaging manifestation characteristics of each case. Results Accuraus rate of ultrasonic was 63.8%, CT 86.1%and MRI 91.7%. Conclusions Ultrasonic, CT and MRI all could clear the size, shape, position and neighbouring relation of the renal AML, among which MRI could accurately diagnose the internal parts and bleeding.It could also distinguish the kidney lipoma, differentiated liposarcoma, and kidney cancer, thus greatly improve the diagnosis accuracy of this disease. -
图 3 双肾血管平滑肌脂肪瘤CT增强图像(与图 2为同一病例,右肾肿块周围可见新月形出血呈略高密度,左肾残留皮质部分明显增强。)
-
[1] Tseng CA, Pan YS, Su YC. Extrarenal retroperitonealangiomyolipoma: case report and review of the literature. Abdom Imaging, 2004, 29(6): 721-723. doi: 10.1007/s00261-004-0179-2 [2] PereiraJM, Sirlin CB, Pinto PS, et al. CT and MR imaging of extrahepatic fatty masses of the abdomen and pelvis: techniques, diagnosis, differential diagnosis, and pitfalls. Radiographics, 2005, 25(1): 69-85. doi: 10.1148/rg.251045074 [3] Yamakado K, Tanaka N, Nakagawa T, et al. Renal angiomyolipoma: relationships between tumor size, aneurysm fomation, and rupture. Radiology, 2002, 225(1): 78-82. doi: 10.1148/radiol.2251011477 [4] Kothary N, Soulen MC, Clark TW, et al. Renal angiomyolipoma: long-term results after arterial embolization. J Vasc Inter Radiology, 2005, 16(1): 45-50. doi: 10.1097/01.RVI.0000143769.79774.70 [5] 陈年根, 姚茹国, 黄学金, 等. 肾血管平滑肌脂肪瘤的非典型CT表现. 中国医学影像学杂志, 1997, 5(1): 69-71.
[6] 曹丹庆, 蔡祖龙. 肾血管平滑肌脂肪瘤//全身CT诊断学. 北京: 人民军医出版社, 2008: 543.
[7] 李松年. 现代全身诊断学. 北京: 中国医药科技出版社, 2007: 9.
[8] Neville R, Herts BR. CT characteristics of primary retroperitoneal neoplasms. Crit Rev Comput Tomogr, 2004, 45(4): 247-270. doi: 10.3109/10408370490506616