Table 2

 Progression of atherosclerotic renal artery disease in 126 diseased renal arteries (excluding five with 100% initial occlusion, 25 persistently normal, and 13 withde novo stenosis (10<50%, 3>50%).27 Figures are given as the number of diseased renal arteries in each category with percentage values in parentheses

% Stenosis on initial angiogram% Stenosis on sequential angiogram
5050–7475–99100
<50 (n=78)54 (69)12 (15)8 (10)4 (5)
 Mean angiographic interval (months)41±0.5836±1.851±359±5.4
50–74 (n=30)16 (53)11 (37)3 (10)
 Mean angiographic interval (months)29±1.234±1.723±7.1
75–99 (n=18)1 (5)7 (39)
 Mean angiographic interval (months)21±1.513±0.8