[Collagenosis nephropathies].

Authors review their own experience in PAN, Lupus ery thematosus and renal Amyloidosis. Two patients with PAN, both with arterial hypertension: one of them of macrosco pic type, presenting great aneurysms localized in brain and in renal arteries; the other patient had microscopic type, with good response to corticotherapy after three years of follow-up. Four patients with lupus erythematosus nephritis; kidney biopsy was performed in three of them: two cases with membranoproliferative glomerulonephritis, and the last one with extramembranos glomerulonephritis. All of them had nephrotic syndrome, and arterial hypertension. Seven patients with renal amyloidosis, four related to reumatoid artritis, two related to mucoviscidosis and the las case was a patient with recurrent mediterranean fever.