螺旋CT多期扫描对肾细胞癌的诊断价值

目的探讨CT在肾细胞癌诊断中的价值。方法回顾性分析22例经手术、病理证实的肾细胞癌CT表现。结果 CT平扫中5例病灶呈等密度或稍低密度,15例为混杂密度,2例为稍高密度。增强扫描皮质期18例明显强化,4例中等度强化,强化均匀或不均匀。肾实质期所有病灶强化迅速减退,肾盂期病灶强化进一步减低。其中8例肾癌出现肾周邻近脏器侵犯及淋巴结转移。结论肾细胞癌的CT表现具有一定特征性,CT对肾细胞癌的诊断具有很高的价值。

Diagnosis of the renal cell carcinoma with multiphasic spiral CT scans

Objective To evaluate the value of multiphasic spiral CT scans for diagnosing the renal cell carcinoma（RCC）.Methods Twenty-two patients with surgically and pathologically proved RCC underwent preenhanced,postenhanced renal cortical,parenchymal and excretory phases CT scans.CT findings of all the patients were analyzed retrospectively.Results Plain CT scans showed RCC lesions with isodensity or slight hypodensity in 5 cases,heterogeneous density in 15 cases,and slight hyperdensity in 2 cases.During renal cortical phase,CT scans showed RCC lesions with obvious enhancement in 18 cases,homogeneously or non-homogeneously moderate enhancement in 4 cases.During renal parenchymal phase,the enhancement of RCC lesions was quickly decreased,while during renal excretory phase,the original enhancement was progressively decreased.Of whom,8 patients whose RCC lesions extended into the perirenal organs and associated with the metastases of lymph nodes.Conclusion Renal cell carcinoma had certain CT feature which enable provide reliable evidence for the definite diagnosis of this disease.