乏脂肪肾血管平滑肌脂肪瘤的多层螺旋CT表现  

Multislice CT Manifestations of Renal Angiomyolipoma with Minimal Fat

作　　者：王宗勇[1] 熊燕[1] 陈志凡[1] 

机构地区：[1]成都大学附属医院放射科,成都610081

出　　处：《肿瘤预防与治疗》2014年第6期264-267,共4页Journal of Cancer Control And Treatment

摘　　要：目的:探讨乏脂肪肾血管平滑肌脂肪瘤的多层螺旋CT(MSCT)表现。方法:回顾分析8例经病理证实的乏脂肪肾血管平滑肌脂肪瘤的MSCT平扫及增强表现。结果:平扫所有病灶密度均匀,4例高密度,2例等密度,2例低密度,均未见钙化密度。6例突出比≥1/2,2例突出比<1/2。6例可见角征。4例鸟嘴征类型1;3例鸟嘴征类型2;1例鸟嘴征类型3。增强扫描均为均匀强化,5例皮质期强化明显,3例实质期强化明显。均未见粗大血管影。结论:肾乏脂肪血管平滑肌脂肪瘤的MSCT表现有以下特征:平扫密度均匀,以等、高密度为主,钙化罕见,增强后均匀强化,突出比多≥1/2,角征多为阳性,鸟嘴征类型1最常见,部分可见迂曲扩张血管。Objective： To investigate the multislice CT（MSCT） manifestations of renal angiomyolipoma（RAML） with minimal fat. Methods：The unenhanced and enhanced MSCT manifestations of 8 cases of RAML with minimal fat were analyzed retrospectively. All the 8 cases were pathologically proved. Results：On unenhanced CT images, the attenuation of all 8 cases was homogeneously, and none of them contained calcification. Compared with that of normal renal parenchy-ma, hyperattenuation was found in 4 cases, isoattenuation in 2 cases, hypoattenuation in 2 cases. Protrusion rate ≥1/2 and angular interface sign was positive in 6 cases. Type 1 beak appearance sign was found in 4 cases, type 2 in 3 cases, type 3 in 1 case. Homogeneously enhancement was found in all 8 cases on contrast enhanced CT images. Among them, ob-vious enhancement at cortical phase was found in 5 cases and at parenchymal phase was found in 3 cases. Enlarged vascular was not found in all 8 cases. Conclusion：MSCT manifestation of renal angiomyolipomas with minimal fat had the following characteristics：attenuation were homogeneous isoattenuation or hyperattenuation on unenhanced CT images, calcification was seldomly found. Homogeneous enhancement after injection of contrast media, protrusion rate≥1/2, angular interface was mainly positive, beak appearance sign was mainly type 1, tortuous or enlarged vessels were found in part of cases.

关 键 词：肾血管平滑肌脂肪瘤 体层摄影术 螺旋扫描 病理学 

分 类 号：R737.11[医药卫生—肿瘤] R730.44[医药卫生—临床医学]