PMC9713009_01
(A) Renal angiography revealed focal stenosis in the mid-portion of the right renal artery and the right inferior renal branch artery was normal. (B) After a stent was implanted into the renal artery, the right inferior renal branch artery was still normal. (C) Severe stenosis was found in the right inferior renal branch artery, no obvious in-stent restenosis was observed. (D) The lesion vessel was dilated successfully and the renal blood flow was restored after the procedure. (E) Intravascular ultrasound image revealed eccentric intimal thickening of the branch artery. (F) Intravascular ultrasound image revealed that no obvious neointimal hyperplasia in the stent.
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F1
Subsequently, catheter-based renal angiography confirmed focal stenosis in the mid-portion of the right renal artery (Figure 1A, Supplementary Video 1), and a bare metal stent was implanted because of dissection after balloon dilation (Figure 1B, Supplementary Video 2). However, no obvious in-stent restenosis was observed, but severe stenosis was found in the right inferior renal branch artery (Figure 1C, Supplementary Video 3), which was totally normal 8 years ago (Figures 1A,B). Intravascular ultrasound (IVUS) images revealed that eccentric intimal thickening caused stenosis of the branch artery (Figure 1E, Supplementary Video 5) and no neointimal hyperplasia in the stent (Figure 1F, Supplementary Video 6). Balloon angioplasty was performed for the branch artery and the lesion vessel was dilated successfully (Figure 1D, Supplementary Video 4).