Results All of the 7 cases of atypical RAML had been misdiagnosed preoperatively but were confirmed with intraoperative frozen section and pathological results.

• 结果7例患者术前影像学检查均诊断为肾癌,但术中冰冻活检及术后病理证实为肾血管平滑肌脂肪瘤。