AJKD Atlas of Renal Pathology: Fibronectin Glomerulopathy Mark A. Lusco, MD, Yi-pu Chen, MD, Hong Cheng, MD, Hong-rui Dong, Behzad Najafian, MD, Charles E. Alpers, MD, Agnes B. Fogo, MD  American Journal of Kidney Diseases  Volume 70, Issue 5, Pages e21-e22 (November 2017) DOI: 10.1053/j.ajkd.2017.09.001 Copyright © 2017 National Kidney Foundation, Inc. Terms and Conditions

Figure 1 Fibronectin glomerulopathy with periodic acid–Schiff–positive material expanding the mesangium with lobular formation and limited increase in mesangial cellularity that is also present along the glomerular basement membranes (periodic acid–Schiff stain). American Journal of Kidney Diseases 2017 70, e21-e22DOI: (10.1053/j.ajkd.2017.09.001) Copyright © 2017 National Kidney Foundation, Inc. Terms and Conditions

Figure 2 Fibronectin glomerulopathy with strong positive fibronectin staining within mesangial areas and along glomerular basement membranes (fibronectin immunohistochemistry stain). American Journal of Kidney Diseases 2017 70, e21-e22DOI: (10.1053/j.ajkd.2017.09.001) Copyright © 2017 National Kidney Foundation, Inc. Terms and Conditions

Figure 3 Fibronectin glomerulopathy with mesangial and subendothelial deposits that are mostly granular with focal fibrillary substructure (electron microscopy). American Journal of Kidney Diseases 2017 70, e21-e22DOI: (10.1053/j.ajkd.2017.09.001) Copyright © 2017 National Kidney Foundation, Inc. Terms and Conditions

Figure 4 Fibronectin glomerulopathy with subendothelial deposits with fibrillary substructure (electron microscopy). American Journal of Kidney Diseases 2017 70, e21-e22DOI: (10.1053/j.ajkd.2017.09.001) Copyright © 2017 National Kidney Foundation, Inc. Terms and Conditions