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[Brain metastasis which appeared during complete response of lung metastatic lesion by sunitinib treatment in a patient with renal cell carcinoma].

A 59-year-old man underwent radical nephrectomy for left renal cell carcinoma with multiple lung metastases (cT3bN0M1) in May 2010. Pathological diagnosis was clear cell carcinoma, G2 and pT3b. After sunitinib treatment for 7 months computed tomography (CT) revealed complete response of lung lesions and the treatment was continued. After 10 months, the patient complained of right hemiplegia. Brain magnetic resonance imaging (MRI) revealed a 3 cm tumor in his frontal lobe of cerebrum. He underwent surgical resection of the tumor and pathological diagnosis was metastatic renal cell carcinoma. He has been well without local recurrence or distant metastasis for 18 months.