To the editor： Renal cell carcinoma （RCC） is a malignant kidney tumor that originates fiom renal tubular epithelialsystem, and 30% of patients with RCC have metastasis at the time of initial diagnosis.1 Frequent sites of RCC metastases include lung, regional lymphatic nodes, liver, bone, and brain,2 while vaginal metastasis of RCC was extremely rare and mostly occurred in the left kidney. We reported a rare case of a patient with metastatic RCC to vagina and investigated the symptoms, diagnosis, therapies, and possible metastatic mechanisms.
SUN Ding-qi LU Jia-ju CAO Qing-wei ZHANG Hui TIAN Yong-jie BI Dong-bin DING Sen-tai
