Fig. 1

Imaging and histopathology demonstrating minimal change disease in the setting of immunoglobulin G4-related disease. a Positron emission tomography–computed tomography scan demonstrating splenic uptake and likely pancreatic uptake. b Light microscopy (hematoxylin and eosin stain; magnification × 400) demonstrating a histologically normal glomerulus. c Light microscopy (immunoglobulin G4 immunostain; magnification × 250) demonstrating multiple immunoglobulin G4 + plasma cells. d Electron microscopy demonstrating complete foot process effacement of podocytes with microvillus transformation and an absence of electron dense deposits (× 2500)