Renal Arteriography in Experimental Renal Vein Occlusion

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Abstract
Complete occlusion was investigated within 2-4 weeks, in which a presumptive diagnosis of renal vein occlusion was made on the basis of the enlarged kidney size and the arterial changes of decreased caliber, stretching, and separation, most pronounced in the interlobar branches of the renal artery. No renal vein filling was seen. Once the kidney size significantly decreased, a specific diagnosis could no longer be made by renal arteriography. By 1 or 2 months the arteriographic picture would be that of an atrophic kidney. The radiographic findings in partial occlusion or slowly developing renal vein occlusion were quite different, because enough circulation was maintained. In the 1st week if the occlusion was sufficient to result in a marked increase in renal size, the arterial changes could be similar to those of complete occlusion. With less occlusion or when the renal size had stabilized at near normal, renal arteriography showed the nonspecific changes on the arterial side of some dilatation and elongation of the interlobar arteries. The venous phase however, with the demonstration of the occlusion or the collateral circulation would enable the correct diagnosis to be established. On intravenous urography with a normal size kidney little or no change may be seen, except for possible ureteral notching from collateral circulation.