Chondro-Osseous Metaplasia in Ependymoma: A Rare Histopathological Finding

Figure 2

(a) A panoramic view of chondro-osseous ependymoma. (b) Very low magnification (20×) of the hematoxylin and eosin-stained section depicting chondro-osseous metaplasia within the substance of conventional ependymoma (areas of anaplasia are not shown). (c, d) At slightly higher magnification (200× and 400×), the organized hyaline cartilage formation and ossification is appreciated. (e) Another low-power field (20×) exhibiting the classic ependymal differentiation in the form of pseudorosettes. (f) Dot-like staining by EMA immunostain.

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