Immunofluorescence staining pattern from a kidney biopsy from a 35-year-old patient presenting with proteinuria has been shown below. What is the most probable cause?
(A) FSGS (B) PSGN (C) Lupus Nephritis (D) Goodpasture syndrome
(C) FSGS- Focal segmental glomerulosclerosis is associated with focal involvement of kidneys and deposition of IgM,C3 ,C1q PSGN- It is an immunocomplex disease and granular pattern is observed on immunofluorescence. There is deposition of C3,C1q and IgG in granular pattern Goodpasture syndrome- Auto antibodies against basement membrane ,linear pattern on immunofluorescence Lupus Nephritis- seen in SLE.