未分化腎細胞癌と尿管移行上皮癌の同側同時性に合併した1例

CONCOMITANT IPSILATERAL ASSOCIATION OF ANAPLASTIC RENAL CELL CARCINOMA AND URETERAL TRANSITIONAL CELL CARCINOMA: REPORT OF A CASE

緒言

　重複悪性腫瘍は決して稀なものではないが，腎と尿管に同側同時性に発生した重複悪性腫瘍の報告は少なく，また，臨床上一方が他方を被覆してしまうことがあり，診断学上重要である。最近われわれは一見肉腫様の構造を示す未分化腎細胞癌と尿管移行上皮癌が同側同時性に発生した1例を経験したので報告する。

A 67-year-old man was admitted with the complaint of right flank painful mass. Patient first noticed right flank mass 4 years before. He had an episode of painless gross hematuria 3 years before. The mass gradually increased in size. Right flank colicky pain apeared 4 days before admission. Physical examination disclosed a volley-ball sized hard mass in the right flank. Right kidney was not visualized by excretory urography. The findings of aortography and renal ultrasonography were compatible with a giant hydronephrosis. Cystoscopy revealed a thumb-tip sized papillary tumor located at the right ureteral orifice.