慢性腎不全患者に発生した両側性腎細胞癌の1例

概要

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We describe a case of bilateral renal cell carcinoma associated with chronic renal failure. A 49-year-old man was admitted to our hospital to initiate hemodialysis. He was found to have multiple renal cystic changes and a left renal mass by ultrasound. Computed tomographic (CT) scan showed a tumor 4 cm in diameter in the left kidney and another one 2 cm in diameter in the right kidney. Left nephrectomy was first performed and histopathological examination revealed renal cell carcinoma of mixed type and granular subtype. Six months after the operation, CT scan showed the mild growth of the tumor in the right kidney. Right nephrectomy was performed and histopathological examination revealed renal cell carcinoma of papillary type and granular subtype. The patient remains well on hemodialysis, with no evidence of recurrence or metastasis for 13 months after nephrectomy.