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Abnormal progress of renal blood vesse l s in hydronephrosis has been reported by many authors as Rayer (1841), Rokitanski (1845), Boograd (1857), Englisch (1870), et al. from the nineteenth century. In general, there are many anomalies of renal artery and vein, especially of the former, and this fact has importance in clinical practice. The author observed a case that t he presence of an inferior polar artery resulted in the coiling of the ureter and in the production of, opened hydronephrosis which was healed operatively, and so reports of its case with the references. 1) Double renal artery in one side has an occurrence of 21.6 % in our country and 22.5 % in Europe and America (Table 1). 2) Polar artery, especially inferior polar artery, is 6.25 % in our country and 5.6% in Europe and America (Table 5). 3) This case had a superior polar arte r y, two inferior polar arteries, two renal arteries, and a C-shaped renal vein. The superior polar artery and the inferior polar artery at the back of ureter which attributes to the bending of ureter and the production of hydronephrosis are cut, and by this operation the vanishment of subjective symptoms (hematuria, lumbago, or press-pain at left renal region) and the recovery of renal functions are recognized. 4) On the unknown hydronephrosis the renal disturbance by abnormal vessels must be examined by advanced angiography, and also the consideration of these vessels must be made during the operative affectation to kidney.
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松浦省三
戸畑共立

腎異常血管に就いて

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