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*Cellularity (cells/matrix) > 50%. | *Cellularity (cells/matrix) > 50%. | ||
*Necrosis >15% - microscopic (without targeting necrosis grossly) ''or'' grossly. | *Necrosis >15% - microscopic (without targeting necrosis grossly) ''or'' grossly. | ||
==DDx by history/site== | |||
Retroperiteum: | |||
#[[Liposarcoma]]. | |||
#[[Undifferentiated pleomorphic sarcoma]]. | |||
#[[Leiomyosarcoma]]. | |||
#[[MPNST]]. | |||
Young person - extremity sarcomas: | |||
#[[Epithelioid sarcoma]]. | |||
#[[Synovial sarcoma]]. | |||
=Adipocytic tumours= | =Adipocytic tumours= |
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