肾透明细胞癌的64层螺旋CT表现  

64-slice spiral CT findings of renal clear cell carcinoma

作　　者：林民辉[1] 黄泽光[1] 罗泽斌[1] 

机构地区：[1]广东医学院附属医院放射科,广东湛江524001

出　　处：《实用放射学杂志》2012年第10期1580-1582,1594,共4页Journal of Practical Radiology

摘　　要：目的总结肾透明细胞癌的64层螺旋CT表现，提高对该肿瘤的认识。方法36例肾透明细胞癌患者均行64层CT平扫及三期增强扫描。分析瘤体密度、囊变坏死、包膜、增强形式、强化程度及相对强化程度。结果33例出现囊变坏死区。平扫19例肿瘤表现为低等混杂密度、13例为低密度、4例稍高密度。增强扫描皮质期瘤体实性部分呈明显不均匀强化33例，呈明显均匀强化3例，最小CT值为92HU，最高达168HU；皮质期的相对强化程度高于实质期、排泄期（P〈0．05）。结论肾透明细胞癌易出现囊变坏死，增强扫描皮质期呈明显不均匀强化，实质期强化程度明显下降，皮质期的相对强化程度高于实质期和排泄期。Objective To summarize of 64-slice spiral CT findings of renal clear cell carcinoma, so as to improve the understand- ing of the tumor. Methods Pre-contrast and three-phase post-contrast spiral CT scans were performed in 36 patients with renal clear cell carcinoma. The density, necrosis, cystic degeneration, capsules, enhancing pattern, enhancing degree and relative enhancing de- gree of the tumors were analysed. Results Necrosis and cystic degeneration of the tumors were seen in 33 cases. Plain scan showed that the tumors were mixed hypo- and isodense in 19, low dense in 13 and hyper-dense in 4. The lesions showed marked inhomoge- neous enhancement in 33 cases,and markedly homogeneous enhancement in 3 cases in cortical phase with minimum CT value of 92 HU and maximum CT attenuation of 168 HU. The relative enhancement degree of the lesions in cortical phase was stronger than that in parenchymal phase and excretory phase（P〈0.05 ）. Conclusion Necrosis and cystic degeneration were after presented in clear cell RCC. The lesions show marked inhomogeneous enhancement in cortical phase, and weaker in parenchymal phase, while the relative enhancement degree in cortical phase is stronger than that in parenchymal phase and excretory phase.

关 键 词：肾脏 肾透明细胞癌 计算机体层成像 

分 类 号：R737.11[医药卫生—肿瘤] R814.42[医药卫生—临床医学]