case_images: PMC2809435_01
case_images: CT scan of the lesion. The lesion can be seen on the right 
  side of tongue base.
case_images: IJOL2009-515068.001.jpg
case_images: PMC2809435_01_IJOL2009-515068.001.jpg
case_images: fig1
case_images: A computed tomography was performed and a possible granulomatous or inflammatory mass with calcification was reported (Figure 1).
case_images: En bloc excision of well-circumscribed mass in the tongue 
  base. M: mentum.
case_images: IJOL2009-515068.002.jpg
case_images: PMC2809435_01_IJOL2009-515068.002.jpg
case_images: fig2
case_images: (a) Closer view of
  amorphous, fibrillary matrix deposition (hematoxylin and eosin, x20). (b) Peach-red staining of the material in Congo-red
  staining (Congo-red, x20). (c) Apple-green
  birefringence under polarized light (Congo-red, polarization microscope, x20). (d) Amyloid deposition in vessel
  walls (Congo-red, x20).
case_images: IJOL2009-515068.003.jpg
case_images: PMC2809435_01_IJOL2009-515068.003.jpg
case_images: fig3
case_images: AA-Congo (AAC) (Dako, Denmark 1/100 dilution) revealed a non-AA-type amyloid deposition (Figure 3).
case_images: (a) Osseous metaplasia observed adjacent to amyloid deposition. 
  Note the single chondrocytes spread in amyloid matrix (asterix) (hematoxlin 
  eosin, x10). (b) Areas presenting extensive chondroid
  metaplasia (hematoxlin eosin, x10).
case_images: IJOL2009-515068.004.jpg
case_images: PMC2809435_01_IJOL2009-515068.004.jpg
case_images: fig4
case_images: Focal chondroid differentiation was also observed either neighboring the osseous tissue or spread as single chondrocytes in the amyloid matrix (Figure 4).