Renal revascularization after splenic artery implantation into the kidney. Consecutive serial angiographic study in the dog.

29 mongrels were subjected to splenic artery implantation into the left kidney. Consecutive angiographies showed that this procedure regularly was followed by an initial thrombus formation in the implanted artery and an early recanalization of this thrombus. After creation of stenosis and eventually occlusion of the left renal artery, newly formed intrarenal vessels could be demonstrated next to the implanted artery. These vessels formed communications between the splenic and intrarenal arteries. At angiography of the implanted splenic artery the constrast medium was seen to pass over to the newly formed vessels and to intrarenal arteries followed by contrast medium opacification of the renal parenchyma and the renal vein and excretion to the pelvis and ureter. The experimental animals survived contralateral nephrectomy and ligature of the ipsilateral renal artery provided that a slowly progressing stenosis of this artery was created.