Apolipoprotein C-II Deposition Amyloidosis: A Potential Misdiagnosis as Light Chain Amyloidosis

Figure 1

H&E (100x and 500x magnification) and Congo red staining/Polarized Congo red. Showing multiple glomeruli with an expansion of the mesangial matrix by amorphous, pale eosinophilic, acellular material and orange-red staining of eosinophilic material with apple green birefringence on polarization microscopy.