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| ==Osteoblastoma== | | ==Osteoblastoma== |
| ===General===
| | {{Main|Osteoblastoma}} |
| *Benign bone tumour.
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| ===Microscopic===
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| Features:<ref name=Ref_Sternberg4_285>{{Ref Sternberg4|285}}</ref>
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| *Anastomosing bony [[trabeculae]] with:
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| **Osteoblasts rimming.
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| ***Cells line-up at edge of bone.
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| Notes:
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| *Histomorphologically near identical/indistinguishable from ''[[osteoid osteoma]]''.<ref name=Ref_Sternberg4_286>{{Ref Sternberg4|286}}</ref>
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| *'''Must''' be greater 1.5 cm by definition.<ref name=Ref_Sternberg4_286>{{Ref Sternberg4|286}}</ref>
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| ====Images====
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| <gallery>
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| Image:Osteoblastoma_-_high_mag.jpg | Osteoblastoma - high mag. (WC)
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| Image:Osteoblastoma_-_low_mag.jpg | Osteoblastoma - low mag. (WC)
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| </gallery>
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| ==Ewing sarcoma== | | ==Ewing sarcoma== |
| {{Main|Ewing sarcoma}} | | {{Main|Ewing sarcoma}} |