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目的分析、探讨小肾癌的MRI表现及特点。方法回顾性分析经手术病理证实的小肾癌患者60例(64灶)的MRI资料。结果 81.2%瘤灶边界清晰,T2 WI有明显假包膜存在。MRI平扫79.7%肿瘤信号不均匀,20.3%肿瘤信号较均匀,T1 WI肿瘤以低信号或中低信号为主(约73.4%),T2WI以混杂信号和高信号为主(92.2%)。增强扫描瘤灶以中重度强化为主(82.3%),80.6%强化不均匀。肿瘤TNM分期为:Ⅰ、Ⅱ期病例92.2%(59/64);Ⅲ、Ⅳ期病例7.8%(5/64)。结论小肾癌的MRI表现有一定特点,对小肾癌的检出、定性、分期及指导外科治疗有重要的价值和应用前景。
Objective To analyze and discuss the MRI features and features of small renal cell carcinoma. Methods MRI data of 60 patients with small renal cell carcinoma (64 lesions) confirmed by surgery and pathology were retrospectively analyzed. Results 81.2% tumor boundary clear, T2 WI obvious pseudomembranous existence. In 79.7% of the cases, the tumor signals were unevenly distributed in 79.7% of the cases by plain MRI. Tumors of 20.3% of the tumors were homogeneous with T1WI signals (73.4%) with low signal or low signal (T2WI) and 92.2% (T2WI) of mixed signal and high signal. Intensive scanning tumor focus to moderate to severe (82.3%), 80.6% uneven reinforcement. The tumor TNM stage was 92.2% (59/64) in stage Ⅰ and Ⅱ, and 7.8% (5/64) in stage Ⅲ and Ⅳ. Conclusion MRI manifestations of small renal cell carcinoma have certain characteristics, which have important value and application prospect for small renal cell carcinoma detection, qualitative, staging and guiding surgical treatment.