XANTHINE STONE AND XANTHINURIA ASSOCIATED WITH RETROCAVAL URETER: REPORT OF A CASE AND A REVIEW OF THE LITERATURE
1976 Volume 67 Issue 8 Pages 670-676
Details
1976 Volume 67 Issue 8 Pages 670-676
A 5-year-old boy was first seen on April 10, 1973, with a complaint of gross hematuria and right flank pain. An x-ray examination revealed a retrocaval ureter with a non-opaque stone in the upper portion of the ureter. The stone was interpreted as a xanthine stone, because serum and urinary uric acid levels were very low and serum and urinary oxypurine levels were very high (Table 1).
On October 1, 1974, he was operated upon. A chocolate-colored, smooth, oval and easily broken stone was removed from the right ureter which encircled the vena cava. The ureter was completely freed and restored to normal position with an end-to-end anastomosis. The stone consisting of 93.5% of xanthine measured 2 by 1.3 by 1cm and weighed 2.3g showing many concentric rings on section. Post operative course was uneventful. He was dicharged on October 22, 1974.
Etiology of xanthine stone formation was briefly discussed.
