LAUSR

© 2018 Indian Journal of Nephrology | Published by Wolters Kluwer Medknow Sir, Recurrent primary membranous nephropathy (MN) is known to occur in renal allografts in about 40% cases, leading to graft dysfunction.[1] Recurrence is most common 2–3 years post–renal transplant but can occur as early as 1 week.[2] Protocol biopsies can reveal the recurrence before proteinuria develops.[1] In early cases, light microscopy (LM, including periodic acid–Schiff or silver stains) will not demonstrate diagnostic abnormalities; however, deposits can be detected by immunofluorescence (IF). Rodriguez EF et al. added Stage 0 in electron microscopic (EM) staging system, where deposits are seen only in IF.[3]