The impoant light microscopical feature in Alpo syndrome are all, EXCEPT:

The light microscopic findings are not characteristic in alpo syndrome. It will be normal in early years of life. In older patients the changes seen are 1. Interstitial fibrosis, 2. Tubular atrophy, 3. Foam cells, 4. Segmental proliferative The presence of interstitial foam cells has been considered as suggestive of Alpo syndrome. Ref: Dan Med Bull 2009;56:105-52