対側萎縮腎を伴う同側同時性腎盂癌・腎癌の1例

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対側腎が萎縮した機能的単腎で,患側不完全重複尿管の上半腎に腎盂癌と腎癌を同時に生じた1例を経験した.症例は70歳男.治療に極めて苦慮したものの,modified MEC療法と半腎切除術により透析に陥ることもなく一応のcancer controlを得たA case of simultaneous double malignant tumor in the same kidney, associating renal cell carcinoma with renal pelvic transitional cell carcinoma, in a 70 year-old-male was reported. On January 6, 2000 he presented with macroscopic hematuria. There were no remarkable findings on cystoscopic examination. Drip infusion pyelography and multidetector-row computed tomography demonstrated a tumor mass on the upper pole of the left kidney and atrophic right kidney. Systemic chemotherapy with CDDP, MTX and ADR was performed preoperatively. Then, hemi-left nephrectomy underwent with the diagnosis of renal pelvic tumor and renal tumor. The surgical specimen was pathologically diagnosed as transitional cell carcinoma of the renal pelvis and renal cell carcinoma of its upper pole. This is the 32nd case of simultaneous occurrence of renal cell carcinoma and transitional cell carcinoma in the same kidney in the Japanese literature.