AORTOGRAPHIC CHANGES AFTER URETERO-ENTEROSTOMY

Abstract

(1) Aortographic changes after the uretero-enterostomy, immediately after the operation to 3 months, were examined on 6 dogs, in which the left ureter was implanted into the sigmoid colon and the right was kept intact.
(2) On the other hand, aortographic examination was made on 6 dogs, in which the left ureter was ligated and the right ureter was kept intact.
(3) No roentgenological changes of nephrograms and renal arteriograms were observed immediately after the uretero-enterostomy.
(4) But, enlargement of the renal shadow and narrowing and elongation of the renal arterial trees were observed on aortograms, 1 month to 3 months after the uretero-enterostomy.
(5) In experimental hydronephrosis, that developed during 2-3 weeks after the ligation of the ureter, aortographic changes were enlargement and thinning of the renal shadow and narrowing and elongation of the renal arterial trees.
(6) As the aortographic changes which occurred some period later after the uretero-enterostomy bear resemblance to that of experimental hydronephrosis, these changes after the uretero-enterostomy seem to be the changes subsequent to stenosis at the point of uretero-enteric anastomosis.
(7) Prognostic significance of these changes in the uretero-enterostomy is not negligible, as these changes stand in close relation to the decreased renal blood flow and the poor renal function.