1. Secondary oxalosis due to excess vitamin C intake
S.H. Nasr, Y. Kashtanova, V. Levchuk, G.S. Markowitz 
Kidney International 
Volume 70, Issue 10, (November 2006)
DOI: /sj.ki
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2. Figure 1
Proximal tubules display diffuse degenerative changes characterized by luminal ectasia, epithelial simplification with coarse cytoplasmic vacuolization, and irregular luminal contours. Mild interstitial edema is present. The findings are also notable for intratubular deposits of calcium oxalate (arrows). (Hematoxylin and eosin; original magnification, × 400.)
Kidney International  , DOI: ( /sj.ki )
Copyright © 2006 International Society of Nephrology Terms and Conditions

3. Figure 2
When viewed under polarized light, the tubular calcium oxalate deposits appear birefringent. (Hematoxylin and eosin; original magnification, × 200.)
Kidney International  , DOI: ( /sj.ki )
Copyright © 2006 International Society of Nephrology Terms and Conditions