<prompt> Rapidly progressive glomerulonephritis is stologically characterised by the presence of numerous -Intramembranous dense depositsAtrophic proximal convoluted tubulesHyalinized small aeriolesEpithelial cell crescents  <response>: RPGN is characterized by the formation of crescents crescentic GN outside the glomerular capillaries extracapillary GN. Crescents are formed from the proliferation of parietal epithelial cells lining Bowmans capsule with contribution from visceral epithelial cells and the invading mononuclear cells. Ref: Textbook of pathology Harsh Mohan 6th edition page no: 667 