Aneurysms of the renal artery are most common:

B. In the main renal artery or the bifurcation into the primary branches.

 DISCUSSION: The majority of renal aneurysms are located either in the main renal artery or at the point of bifurcation into the branches. The appropriate treatment is resection of the aneurysm with restoration of continuity of the artery whenever possible, often with the use of a graft.