<prompt> Histology of Myositis ossificans mimics -OsteosarcomaOsteochondromaGCTEwings tumour  <response>: Histologically myositis ossificans mimics osteosarcoma.They can be differentiated by zone phenomenon :-Osteogenic sarcoma Central zone contains mature cells and peripheral zone contains more active immature cells.Myositis ossificans Central zone contains active immature cells and peripheral zone contains more mature cells. 