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緒言
尿管ポリープは従来より比較的まれとされており，現在まで約120例あまりが報告されているが，術前に確実に診断することは，最近の診断技術の進歩をもつてしてもなお困難である。術前には確定診断がつかず，術後摘出標本を検査して尿管ポリープと判明し，その組織学的所見が特異であつた症例をここに報告する。
A 65-year-old man was admitted with intractable urinary tract infection. KUB showed a stone in the right kidney. IVP revealed right nonvisualized kidney, which had no uptake of radionuclide on renal scintigraphy and extremely poor vascularity on angiography. Retrograde pyelography suggested infected hydronephrosis with a calculus. Right nephrectomy was performed. The removed kidney, weighing 150 grams, showed the feature of infected hydronephrosis. At the ureteropelvic junction, were found two polyps each measuring 1.5cm×0.7cm. A pathohistological study showed chronic pyelone-phritis with contracted parenchyma and adcnomatous polyps.
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