Difference between revisions of "Chondro-osseous tumours"

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1,014 bytes added ,  04:41, 27 December 2010
→‎Osteoid osteoma: +osteoblastoma
(→‎Osteoid osteoma: +osteoblastoma)
Line 84: Line 84:
Features:<ref name=Ref_Sternberg4_285>{{Ref Sternberg4|285}}</ref>
Features:<ref name=Ref_Sternberg4_285>{{Ref Sternberg4|285}}</ref>
*Anastomosing bony [[trabeculae]] with:
*Anastomosing bony [[trabeculae]] with:
**Variable mineralization  
**Variable mineralization.
***Mineralization (calcium '''p'''hosphate) = '''p'''urple on [[H&E stain]].
***Mineralization (calcium '''p'''hosphate) = '''p'''urple on [[H&E stain]].
**Rimmed by osteoblasts.
**Osteoblasts rimming.
***Cells line-up at edge of bone.
***Cells line-up at edge of bone.


Image:
Images:
*[http://library.med.utah.edu/WebPath/COW/COW211.html Osteoid osteoma - CT scan (med.utah.edu)].
*[http://library.med.utah.edu/WebPath/COW/COW211.html Osteoid osteoma - CT scan (med.utah.edu)].
*[http://www.sciencephoto.com/images/imagePopUpDetails.html?pop=1&id=700030210&pviewid=&country=67&search=gschmeissners&matchtype=FUZZY Osteoid osteoma (sciencephoto.com)].
*[http://www.sciencephoto.com/images/imagePopUpDetails.html?pop=1&id=700030210&pviewid=&country=67&search=gschmeissners&matchtype=FUZZY Osteoid osteoma (sciencephoto.com)].
*[http://commons.wikimedia.org/w/index.php?title=File:Osteoblastoma_-_high_mag.jpg Osteoblastoma - high mag. (WC)] - histological similar to OO.
**[http://commons.wikimedia.org/w/index.php?title=File:Osteoblastoma_-_low_mag.jpg Osteoblastoma - low mag. (WC)] - histological similar to OO.


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


==Ewing sarcoma==
==Ewing sarcoma==
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