PMC7705808_01
The imaging findings of our patient. (a) Diuresis renogram shows a high
dysfunction of the right kidney. Red and green lines show function of the
left and right kidney, respectively. (b) Three-dimensional computed
tomography angiography (3DCTA): right renal artery stenosis. (c)
Angiography: the right renal artery showed a stenosis at 2/3 of the site
from the aorta to branch (white arrows). (d) The clinical course after
admission just before catheter therapy: hypertension appeared at day 9,
which lasted after administration of several anti-hypertension drugs. We
examined the catheter angiography and found a right renal artery stenosis.
He underwent balloon catheterization for the stenosis of the renal artery to
another hospital.
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PMC7705808_01_10.1177_2050313X20969559-fig1.jpg
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As shown in Figure 1(a), the diuretic renogram showed right kidney dysfunction. Contrast computed tomography did not detect renal artery stenosis (Figure 1(b)), but selective angiography revealed right renal artery stenosis at 2/3 of the site from aorta to branch (Figure 1(c)); the stenosis ratio was 99%, indicating that it led to increased plasma renin and aldosterone levels and hypertension. As shown in Figure 1(d), continuous intravenous infusion of nicardipine and oral administration of doxazosin were required to manage hypertension.