PMC5607598_01
Bone chambers massively invaded by grayish-colored oxalate crystals deposited in stars or rosettes (hematoxylin and eosin stain, original magnification x 40)
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Fig1
Hematoxylin and eosin stain shows six bone chambers, massively invaded by grayish-colored oxalate crystals deposited in stars or rosettes surrounded by a brisk foreign body giant cell reaction (Figs. 1 and 2).
Grayish-colored oxalate crystals deposited in stars or rosettes surrounded by a macrophage reaction against foreign bodies (hematoxylin and eosin stain, original magnification x 200)
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PMC5607598_01_12907_2017_59_Fig2_HTML.jpg
Fig2
Hematoxylin and eosin stain shows six bone chambers, massively invaded by grayish-colored oxalate crystals deposited in stars or rosettes surrounded by a brisk foreign body giant cell reaction (Figs. 1 and 2).
Medullar fibrosis (special trichrome stain, original magnification x 200)
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Fig3
Special trichrome staining revealed a medullar fibrosis (Fig. 3).
A very intense pale green birefringence of crystals of oxalate showed in polarized light (hematoxylin and eosin stain, original magnification x 400)
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Fig4
Under polarized light, crystals of oxalate showed a very intense pale green birefringence (Fig. 4).    