多层螺旋CT结合Bosniak分级在肾囊性肿物诊断中的价值

Evaluation of Multi-slice Spiral Computed Tomography in Cystic Renal Masses Using the Bosniak Classification

目的评价多层螺旋CT（MSCT）结合Bosniak分级对肾囊性肿物的诊断价值。资料与方法回顾性分析经手术、病理证实的109例患者共129个肾囊性占位术前MSCT的影像表现，并根据肾囊性占位的CT征象对其进行Bosniak分级；将MSCT的Bosniak分级结果与病理进行对照分析，判断各个级别中恶性囊肿的发生率；采用lo—gistic回归分析预测Ⅰ～Ⅳ级中恶性肾囊肿的可靠CT征象。结果129个囊性肿物中，17个为恶性，112个为良性。对129个Ⅰ-Ⅳ级囊性病灶的CT特征进行logistic回归分析，结果显示实性成分强化是预测恶性肾囊肿的唯一可靠征象。结论高分辨CT结合Bosniak分级对大部分囊性肿物能够准确诊断；实性成分强化是预测恶性囊性肿物的唯一可靠征象。

Objective To evaluate MSCT findings in cystic renal masses using the Bosniak classification. Materials and Methods MSCT findings of 129 consecutive cystic renal masses in 109 patients pathologically confirmed were retrospectively reviewed using Bosniak classification system. Results 112 benign and 17 malignant renal cystic lesions were found in 109 patients. Enhancement of solid components was the only specific sign in the prediction of malignancy. Conclusion MSCT could be helpful in the diagnosis of majority of cystic renal masses in combination of the Bosniak classification. Enhancement of solid components was the only specific sign in the prediction of malignancy.