Case Report
Solitary Amyloid Tumor of the Tongue Base
Figure 3
(a) Closer view of
amorphous, fibrillary matrix deposition (hematoxylin and eosin, ×20). (b) Peach-red staining of the material in Congo-red
staining (Congo-red, ×20). (c) Apple-green
birefringence under polarized light (Congo-red, polarization microscope, ×20). (d) Amyloid deposition in vessel
walls (Congo-red, ×20).