An intra-oral soft huge mass with bleeding tendency was found recently.The lesion was proved as metastatic renal cell carcinoma after incisional biopsy and pathologic examination.

• 此次至本院因发现口内有一肿块合并有局部出血的现象而至本院求诊，经放射线学检查及切片检查证实为肾细胞癌的转移病灶。