By studying these cases, we found that renal incidental carcinoma had some characteristics including small tumor size, early pathological stage, localized growth and high long-time survival rate.
资料分析发现：肾偶发癌具有肿瘤体积小、病理分期低、生长局限、术后远期生存率高的特点。
Postoperatively, there was local tumor recurrence or distal metastasis in 6.9% of patients with incidental RCC and 30.2% of symptomatic patients.
术后局部复发或远处转移情形，偶发性肾肿瘤比有症状的肾肿瘤低（6.9%比30.2%）。
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