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目的总结肾平滑肌瘤的诊治经验,以提高对本病的术前诊断水平。方法回顾分析1例肾平滑肌瘤患者的临床资料,结合文献资料,特别是对彩色多普勒超声检查、CT、MRI等影像学资料进行分析。结果肾平滑肌瘤临床表现多无特征性。但彩色多普勒超声检查多表现为不均匀的低回声实性肿块,边界清楚,无或较少的彩色血流信号。CT平扫表现多为实性软组织块影,界线清楚,肿瘤实体部分平扫密度均较高,稍高于肾脏,与肌肉密度相似;增强扫描皮髓期呈轻中度强化,强化程度低于其周围肾脏实质。MRI平扫T1WI为等信号或低信号,T2WI以低信号为主,增强扫描呈中度持续性较均匀强化。结论肾平滑肌瘤是肾脏的一种罕见良性肿瘤,影像学检查有相似于平滑肌的征象,术前穿刺活检可以提高本病的诊断正确率。
Objective To summarize the experience of diagnosis and treatment of renal leiomyoma in order to improve the preoperative diagnosis of this disease. Methods The clinical data of 1 patient with renal leiomyoma were retrospectively analyzed. The imaging data of the patients with renal leiomyoma were retrospectively analyzed, especially the color Doppler ultrasound, CT, MRI and other imaging data. Results Renal leiomyoma more clinical features without characteristic. However, color Doppler ultrasound showed mostly heterogeneous hypoechoic lumps with clear boundary and no or fewer color flow signals. CT scan mostly solid soft tissue block, the line clear, the solid part of the tumor density is higher than the plain, slightly higher than the kidney, and muscle density similar; enhanced scan of the spinal cord was mild to moderate enhancement less than the degree of enhancement The surrounding kidney essence. MRI plain T1WI equal signal or low signal, T2WI low signal-based, enhanced scan was more moderately sustained more uniform enhancement. Conclusion Renal leiomyoma is a rare benign tumor in the kidney. Radiographic examination is similar to that of smooth muscle. Preoperative biopsy can improve the diagnostic accuracy of this disease.