抄録
We found a typical horseshoe kidney in a female cadaver of 84 years old. The major findings on the kidney are as follows.
1) One kidney fused into the other at their lower poles. The area of fusion, generally called the isthmus, was found to consist of renal parenchymal tissues.
2) The position of both kidneys was lower than that of the normal ones.
3) The bilateral renal hili opened anteriorly, the renal pelvis exposed itself in the hilus and the ureters passed downward along the ventral aspect of the kidneys.
4) There were additional vessels. Namely, there was an artery which arose from the dorsal aspect of the abdominal aorta with the short common trunk accompanied with the median sacral artery and entered the left isthmus. There were two veins, which came from the right hilus and opened into the inferior vena cava. There was another vein which arose from the isthmus and drained into the left common iliac vein.
5) Histologically examined, the isthmus contained more convoluted tubules and connective tissues, and fewer glomeruli, as compared with the kidney proper.
