囊性肾癌的超声和CT对照研究

Comparative study of cystic renal cell carcinoma by ultrasonography and CT

目的 探讨囊性肾癌的超声表现及其诊断价值。方法 2 0例住院病例术前均行超声检查 ,并与CT对照。结果 2 0例囊性肾癌均经手术和病理证实 ,其中左侧 12例 ,右侧 8例 ,超声和CT均全部检出。常规超声病灶表现为单房或多房囊肿 5例 ,瘤内分隔 10例 ,瘤内结节 4例 ,类实质回声 1例。彩色多普勒超声发现瘤内血流 18例 ,其中测及动脉频谱 17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 19例 ,分隔强化 6例 ,结节强化 4例。常规超声联合彩色多普勒超声诊断准确率 85 % ,CT诊断准确率 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。

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 12 cases on the left side and 8 cases on the right side. On B-mode ultrasound images, all lesions appeared as unilocular or multilocular cyst in 5 cases, intratumoral septum in 10 cases,intratumoral nodule in 4 cases,solid-like mass in 1 case. Color blood flow was showed within tumors in 18 patients,in which 17 cases showed the arterial spectrum with a mean resistance index of 0.66. On enhanced CT scans, all the lesions appeared as the early uneven enhancement(19 cases), septal enhancement(6 cases) and mural nodular enhancement(4 cases) respectively. The accuracy of conventional ultrasound combined with color Doppler ultrasound was 85%, while the accuracy of the enhanced CT was 80%.Conclusions Conventional ultrasound combined with color Doppler ultrasound and enhanced CT plays an important role in diagnosis of cystic renal cell carcinoma.