A 8 year old male had non blanching rashes over the shin and swelling of knee joint with haematuria +++ and protein +. Microscopic analysis of his renal biopsy specimen is most likely to show?
Answer is C (Mesangial deposits of IgA): Presence of non blanching rash (Purpura), swelling of knee (Ahralgia) along with haematuria (glomerulonephritis) suggests the diagnosis of Henoch- Schonlein purpura. H.S purpura is characterized by deposition of IgA in the mesangial region (Robbins)
Tubular necrosis
Visceral podocyte fusion
Mesangial deposits of IgA
Basement membrane thickening