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緒言
尿路の真珠腫は,1861年Rokitansky1)によつて最初に報告されたが極めてまれとされており,炎症と刺激によつて起こる扁平上皮化生に起因すると言われている。このたび,われわれは腎切石術後11年を経て,腎盂腫瘍を疑わせた腎盂真珠腫の1例を経験したので報告する。
A 54-year-old man was hospitalized complaining of left flank pain and a white membranous debris in his urine. Past medical history showed a left nephrolithotomy for a upper renal caliceal stone 11 years ago. X-ray examination of KUB disclosed a calcified mass in the lower renal caliceal area. An IVP revealed a deformity and foldlike shadows of left renal pelvis and calices. A urinaly cytology of the diseased side showed keratinous debris, squamous cells and atypism of transitional cells. On the basis of the above data a left renal pelvic tumor was suspected and left nephrectomy was performed.
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