囊性肾恶性肿瘤的CT诊断

目的 :探讨囊性肾恶性肿瘤的CT表现与临床病理基础 ,提高对囊性肾恶性肿瘤的认识。方法 :对经手术病理证实的 2 2 7例肾恶性肿瘤中 2 5例囊性肾恶性肿瘤的CT图像进行回顾分析。结果 :2 5例囊性肾恶性肿瘤中肾盂移行细胞癌 8例 ,肾细胞癌 16例 ,肾胚胎癌 1例。本组 2 5例囊性肾恶性肿瘤的壁均显示较厚 (厚于 3 .0mm) ,且厚薄不均 ,占 10 0 %。囊变区有不规则的分隔或囊内有实性成分 2 0例 ,占 80 %。增强后囊壁、囊内分隔及实性成分均有强化。囊变区内CT值较单纯性肾囊肿高 ,P <0 .0 1。结论 :囊性肾恶性肿瘤的CT表现有一定特征性 ,了解这些特征有利于正确诊断

Computed tomography diagnosis of cystic renal malignant tumor

Objective:To study CT appearances and basic pathology of cystic renal malignant tumour,and improve the diagnosis accuracy.Methods:The CT findings of cystic renal malignant tumour in 25 cases proved by operation and pathology were retrospectively analyzed.it accounted for 11%(25/227) of renal malignant tumor.Results:Among all 25 cases,transitional cell carcinoma was confirmed in 8 cases,renal cell carcinoma in 16 cases,renal embryonal cancer in 1 case.The wall of cystic renal malignant tumor was uneven,and thicker than 3mm.It accounted for 100%(25/25);There were irregular septa or mural nodules in the cystic renal malignant tumour.It accounted for 80%(20/25);After contrast medium was injected,the wall,septa and mural nodules were moderately or obviously enhanced.The density of cystic area in renal malignant tumour was higher than the pure renal cyst.Conclusion:Understanding of the characteristics of CT manifestations of the cystic renal malignant tumour is helpful to diagnose this disease correctly.