<prompt> A pt. presents with hematuria of several days and dysmorphic RBC casts in urine. The site of origin is ?KidneyUreterBladderUrethra  <response>: Ans. is a ie kidney Isolated microscopic haematuria can be a manifestation of glomerular disease. The RBCs of glomerular origin are often dysmorphic. Haematuria with dysmorphic RBCs, RBC casts and protein excretion 500 mgday is viually diagnostic of glomerulonephritis. - Harrison 