Difference between revisions of "Soft tissue lesions"

Soft tissue lesions (view source)

1,073 bytes removed , 15:11, 1 April 2011

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 ***EWSR1-ATF1.
 ***EWSR1-CREB1 (GI tract associated).
-==Chondrosarcoma==
-===General===
-*May arise from an ''enchondroma''.
-*Usually a good prognosis.
-===Microscopic===
-Features:
-*Resembles cartilage at low power.<ref name=Ref_Klatt417>{{Ref Klatt|417}}</ref>
-*More cellular than cartilage... but relatively paucicellular compared to other sarcomas.
-Images:
-*[http://commons.wikimedia.org/wiki/File:Chondrosarcoma_(1).jpg Chondrosarcoma - low mag. (WC)].
-*[http://commons.wikimedia.org/wiki/File:Chondrosarcoma_(2).jpg Chondrosarcoma - high mag. (WC)].
-*[http://commons.wikimedia.org/wiki/File:Chondrosarcoma_(3).jpg Chondrosarcoma - high mag. (WC)].
-DDx:
-*[[Chordoma]].
-====Grading====
-Features:<ref name=Ref_WMSP643>{{Ref WMSP|643}}</ref>
-*Grade I: moderate cellularity +/- binucleated cells.
-*Grade III: nuclear pleomorphism, mitoses common.
-*Grade II: between Grade I and Grade III.
-===IHC===
-*S-100 -ve. (???)
-==Mesenchymal chondrosarcoma==
-===Microscopic===
-Features:
-*"White clouds in a blue sky".
-Image:
-*[http://moon.ouhsc.edu/kfung/jty1/opaq/PathQuiz/S0A001-PQ01-M.htm Mesenchymal chondrosarcoma (ouhsc.edu)].
 ==Synovial sarcoma==