超声和CT对囊性肾癌诊断的对比观察

目的：探讨囊性肾癌的超声表现及其诊断价值。方法：20例囊性肾癌病例术前均行超声检查，并与CT对照。结果：20例囊性肾癌均经手术和病理证实，其中左侧13例、右侧7例，超声和CT均全部栓出。常规超声病灶表现为单房或多房囊肿4例、瘤内分隔9例、瘤内结节5例、类实质回声2例。彩色多普勒超声发现瘤内血流17例，其中测及动脉频谱16例，阻力指数平均为0．66。CT表现为病灶增强后早期不均匀强化17例，其中5例分隔强化、4例结节强化。常规超声联合彩色多普勒超声诊断准确率为85％，CT诊断准确率为80％。结论：常规超声联合彩色多普勒超声和增强CT对囊性肾癌的诊断有重要价值。

Comparative study of cystic renal cell carcinoma by ultrasonogralhy and CT

Objective:To study the features and values of ultrasound and helical computed tomography(CT)in diagnosis of cystic renal cell carcinoma.Methods:Twenty patients were preoperatively examined by B mode ultrasound,color doppler ultrasound and helical CT.Results:All the cases were confirmed by operation and pathology,including 13 cases on the left side and 7 cases on the right side.On B mode ultrasound images,all lesions appeared as unilcular cyst in 4 cases,intratumoral septum in 9 cases,intrarummmoral nodule in 5 cases,solid-like mass in 2 cases.Color blood flow was showed within tumors in 17 patients,in which 16 cases showed the arterial spectrum with a mean resistance index of 0.66.On enhanced CT scans,all the lesions appeared as the curly uneven enhancement(17cases),septal enhancement(5cases)and mural nodular enhancement(4cases)respcctively.The accuracy of conventional ultrasound combined with color Doppler ultrasound was 85%,while the accuracy of the enhanced CT was 80%.Conclusions:Conventional ultrasound with color doppler ultrasound and enhanced CT plays an important role in diagnosis of cystic renal cell carcinoma.