Quiz Page February 2014 American Journal of Kidney Diseases Dinette E. Agterhuis, MD, Edwin P. Schuurmans, BSc, Marieke C.H. Hogenes, MD, Gozewijn D. Laverman, MD, PhD  American Journal of Kidney Diseases  Volume 63, Issue 2, Pages A18-A21 (February 2014) DOI: 10.1053/j.ajkd.2013.06.030 Copyright © 2014 National Kidney Foundation, Inc. Terms and Conditions

Figure 1 Abdominal computed tomographic scan shows an enlarged corpus and tail of the pancreas (arrow) and enlarged kidneys. American Journal of Kidney Diseases 2014 63, A18-A21DOI: (10.1053/j.ajkd.2013.06.030) Copyright © 2014 National Kidney Foundation, Inc. Terms and Conditions

Figure 2 Kidney biopsy. (A) David Jones stain; original magnification, ×20. (B) Hematoxylin and eosin stain; original magnification, ×20. (C) Detailed image of interstitium (hematoxylin and eosin stain; original magnification, ×40). (D) Tri-Pas stain; original magnification, ×10. (E) Arrow indicates wall vein. David Jones stain; original magnification, ×10. (F) Immunoglobulin G stain; original magnification, ×40. Abbreviations: g, glomerulus; i, interstitium; t, tubule; v, vein. American Journal of Kidney Diseases 2014 63, A18-A21DOI: (10.1053/j.ajkd.2013.06.030) Copyright © 2014 National Kidney Foundation, Inc. Terms and Conditions

Figure 3 Kidney biopsy. Immunoglobulin G4 stain; original magnification, ×40 (equals 1 high-power field). American Journal of Kidney Diseases 2014 63, A18-A21DOI: (10.1053/j.ajkd.2013.06.030) Copyright © 2014 National Kidney Foundation, Inc. Terms and Conditions