目的 分析肾错构瘤的CT扫描及 VR重建影像学特征，提高对肾错构瘤的诊 断率和检出率。方法 采用回顾性分析法 对我院2015年2月-2016年2月接收诊治的 40例肾错构瘤患者，其中男性患者有15例 (37.50%)，女性患者有25例(62.50%)，CT 检查过程中，患者取仰卧位，扫描范围为 自髂嵴上方至膈顶，高压注射器团注法 经上肢静脉一次性团注非离子型对比剂 (300mg I/ml),用量80-100ml，注射速度 为2.5-3.0ml/s,采用CT仪器为西门子公司 的多排螺旋CT(MSCT)，螺距为1.25, 常规 平扫、增强扫描后行VR重建。结果 本研 究40例中，右肾25例，左肾13例，双肾2 例。病灶直径范围为2.0-9.6cm。CT平扫 特征：呈混杂密度肿块、等、低密度肿 块；CT增强扫描特征：见病灶内平滑肌及 血管成分表现为不同程度的增强，肿瘤出 血灶和脂肪密度灶无明显强化。VR重建： 能清晰显示肾动脉血管的分支方向和粗 细，以及动脉血管腔是否狭小,血管壁内 是否存在斑块或钙化，肿瘤是否浸润血 管，肿瘤是否压迫周围血管。结论 肾错 构瘤小的病变无明显症状，却具有特征性 的影像表现，肾脏CT平扫及增强扫描能够 清楚检查出肾错构瘤小病灶；CT三维重建 等影像检查对肾错构瘤及瘤内出血多能作 出明确诊断，从而提高肾错构瘤检出率和 准确性，减少了误诊和漏诊。

Objective To analyze the CT scanning and VR reconstruction imaging feature analysis of renal hamartoma and improve diagnostic rate, relevance ratio of renal hamartoma. Methods 40 cases of renal hamartoma in our hospital from February 2015 to February 2016 were selected. Male 15 cases (37.50%), female 25 cases (62.50%). They were given CT scanning, maintained at supine position, scanned area from crista ilii to diaphragmatic dome, non-ionic contrast media was given by high pressure syringe group through the upper limb vein, 300mg I/ml, dosage 80-100ml, injection speed 2.5~3.0ml/s, MSCT, screw pitch was 1.25, VR reconstruction was given after routine scan and enhancement scan. Results Of 40 cases, 25 right kidney, 13 left kidney, 2 right kidney. Focus diameter range 2.0-9.6 cm. CT scanning feature: mixed density lump, low density mass. CT enhancement scan feature: smooth muscle and vascular component showed strengthen of different degree, tumor hemorrhage stove and fat density focal existed no obvious strengthen. VR reconstruction: clearly showed renal artery and its branch, distribution situation, stenosis or not in blood vessel intracavity, plaque and calcification. Conclusion Small lesion of renal hamartoma has no obvious symptoms and it has distinctive imaging finding. CT scanning, enhancement scan can clearly detect renal hamartoma small lesion. CT three-dimensional reconstruction can confirm renal hamartoma and intratumoral hemorrhage. It can improve detection rate and accuracy of renal hamartoma and lower misdiagnosis and missed diagnosis.