[Synchronous bilateral renal cell carcinoma in mass examination: a case report]

A 65-year-old female with bilateral renal cell carcinoma which was incidentally found by general check-up developed left hemiplegia following left nephrectomy. Marked metastasis of cervical spine was demonstrated by computerized tomography scanning, which was not evident before the operation by X-ray examinations. The patient died of respiratory paralysis one month after the operation. This case was difficult to treat, because the disease advanced so rapidly.