We report a case of a 42-year-old woman with cystic nephroma arising from the lower pole of the right kidney with microscopic foci of sarcomatous stroma.

• 我们在这里报告一个42岁女性诊断为右肾下端的囊肿性肾细胞瘤合并有小部分的肉瘤性实质变化。