case_images: PMC6498773_01
case_images: Kidney biopsy under light microscopy with periodic acid-Schiff (PAS)
  staining. Diffuse acute tubular injury of tubules. Atypical casts stain pink
  with a granular to fractured appearance. Note the jagged edges with a
  surrounding cellular reaction.
case_images: 10.1177_2324709619843944-fig1.jpg
case_images: PMC6498773_01_10.1177_2324709619843944-fig1.jpg
case_images: fig1-2324709619843944
case_images: The biopsy was significant for mild mesangial expansion, diffuse acute tubular injury, and atypical casts with a granular to fractured appearance with a surrounding cellular reaction (Figure 1).