among secondary forms of hypertension ( 7.1 % ) renal hypertension , with a rate of 5.8 % , was the commonest form ( hypertension of renal-parenchymatous origin 4.9 % , renovascular hypertension 0.8 % , hypertension associated with unilateral hydronephrosis 0.1 % .
C0020544
hypertension
C0020545
renovascular