FIG 2. Angiographic change and SEM findings in a representative case (case 2).

A, Prestenting angiogram shows stenotic change at the level of the lumbar artery orifice (arrow).

B, Angiogram obtained after stent placement shows that the stenotic lesion is improved and the lumbar artery is patent.

C, SEM image (original magnification, X40) shows that the stent struts crossing the orifice of the lumbar artery are covered with thick neointima, and the lumbar artery orifice becomes narrow.