Berger's nephropathy: relationship between histological pattern, blood pressure and renin.

Vascular damage (VD), glomerular sclerosis (GS), renin (PRA) and blood pressure were assessed in 50 patients with Berger's nephropathy. GS was present in 5/15 patients without VD and affected more than 15 per cent of glomeruli in seven patients with minimal VD. Nine out of 19 patients with GS were normotensive. VD was present in 35 patients: 16 were hypertensive and 19 normotensive. Therefore hypertension is not the only mechanism responsible for VD. In the seven normotensive patients with high PRA, GS was not present while VD was absent or minimal.