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Resolving Membranous Nephropathy

Arkana Laboratories, renal pathology, Membranous Nephropathy
A 40-year-old white male presents with 3 grams/24 hr of proteinuria and swelling around his ankles. He reports that he has had foamy urine over the last 4 months, but was unable to go to a doctor till now because of lack of insurance. Image 1 and image 2 shows irregularly thickened glomerular basement membranes with lamellation. Image 3 shows numerous "holes" on silver stain. Images 4, 5, and 6 show weak staining for IgG, kappa, and lambda, respectively. Membranous nephropathy in a resolving phase can be a tricky diagnosis since the immunofluorescence staining may be extremely weak or negative....