Digitally reinforced hematoxylin-eosin polarization technique in diagnosis of rectal amyloidosis

Figure 1 Easily identified amyloid deposits in a submucosal vessel wall (arrows). A: Brightfield view of hematoxylin-eosin (HE) staining (amyloid is stained pinkish-red); B: Digitally reinforced polarization view of the same HE-stained section. Note the yellowish green tint of birefringence; C: Brightfield view of Congo-red staining (deposits exhibit a salmon-pink appearance); D: Polarization view of the same Congo-red-stained section. Note the apple green tint of polarization is more pronounced than in the digitally reinforced HE polarization image (arrow); 10× magnification.