CT多期增强扫描在肾细胞癌诊断中的应用

Multi-phase helical CT in the diagnosis of renal cell carcinoma

目的探讨CT多期增强扫描在肾细胞癌诊断中的应用价值。方法分析经手术病理证实的38例肾细胞癌患者,男27例,女11例,年龄25～72岁(平均48岁)。全部采用CT多期增强扫描。结果均为单肾单发病灶,形态上呈圆形或椭圆形35例,形态不规则3例;有明显假包膜26例(68%);密度呈较均匀稍低密度27例(71%);31例(82%)肿瘤呈重度强化,5例(13%)呈中度强化,2(5%)例呈轻度强化。35例(92%)强化不均匀。95%的病灶强化均呈"快进快出"型。CT分期准确率为95%。结论CT多期增强扫描是肾癌术前诊断与鉴别诊断的有效方法。

Objective To evaluate the characteristic appearances of RCC in dual - phase helical CT study. Methods Dual -phase helical CT findings in 38 cases（27 male, 11 female） with RCC proved by surgical and pathological specimens were analyzed retrospectively. Results 26 cases（68% ） showed pseudocapsule and 35 cases（92% ） showed clear shape; On the precontrast scan, RCC appears slightly - hypodensity in 27 cases （71% ） ; on post contrast scan, homogeneous enhancement were found in 35 cases （ 92% ） ; 31 cases （ 82% ） showed significant enhancement, 5 cases （ 13% ） showed moderate enhancement,2 cases （5 % ） showed mild enhancement. 95 % of the cases showed strong enhancement in the cortical phase but weak enhancement in the late phase. Conclusions The multi - phase helical CT scan is useful for the diagnosis and staging of RCC.