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小肾肿瘤(small renal masses,SRMs)通常被定义为在增强图像上最大直径≤4 cm的肿瘤[1]。临床上将直径≤4 cm的肾癌称为小肾癌,约占肾癌发病率的28.4%[2],多为偶然发现。小肾癌发生转移的危险性更低[3],且供选择治疗的方案更多。小肾癌与良性肿瘤鉴别的术前误诊率为1.7%~22.0%[1],因此SRMs良恶性的诊断及鉴别诊断对临床治疗具有重要意义。目前,SRMs的诊断方法较多,虽然CT是评
Small renal masses (SRMs) are commonly defined as tumors with a maximum diameter of ≤ 4 cm in enhanced images [1]. Clinically ≤ 4 cm diameter renal cell carcinoma called renal cancer, accounting for about 28.4% of the incidence of renal cancer [2], mostly by chance. Small renal cell carcinoma of the lower risk of metastasis [3], and options for treatment of more programs. Preoperative misdiagnosis rate of small renal cell carcinoma and benign tumor is 1.7% ~ 22.0% [1], so the diagnosis and differential diagnosis of benign and malignant SRMs is of great significance for clinical treatment. Currently, there are many diagnostic methods for SRMs, although CT is a review