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目的探讨小儿恶性肾肿瘤的CT表现特征。方法回顾分析43例经手术、病理证实的儿童原发性恶性肾肿瘤的CT表现。全部病例行CT平扫与增强检查,15例同时行MRI 检查。结果 43例中,Wilms瘤34例,其中29例残肾强化呈“新月形、环形”征;肾恶性杆状细胞瘤4例,均有瘤体大、大片坏死及肾包膜下新月形低密度积液;肾透明细胞肉瘤2例,颅骨转移是重要佐征;肾细胞癌3例,1例有钙化。结论 CT检查可准确显示肾肿瘤的部位、大小、侵犯范围、影像特点及转移情况,为肿瘤的临床分期、制定治疗方案、估计预后提供重要依据。
Objective To investigate the CT features of children with malignant renal tumors. Methods Retrospective analysis of 43 cases of pathologically confirmed primary malignant renal tumors in children with CT. All cases underwent CT scan and enhanced examination, 15 cases underwent MRI examination simultaneously. Results In 43 cases, there were 34 cases of Wilms tumor, of which 29 cases of remnant kidney enhancement showed “crescent-shaped” sign; 4 cases of malignant renal cell carcinoma of the kidney, both tumor large necrosis and nephritis crescent Low density fluid; 2 cases of renal clear cell sarcoma, skull metastasis is an important adjuvant; 3 cases of renal cell carcinoma, 1 case of calcification. Conclusion The CT examination can accurately display the location, size, extent of invasion, imaging features and metastasis of renal tumors, and provide an important basis for the clinical staging, formulation of treatment plans and prognosis estimation.