| intraosseous low-grade osteosarcoma |
a well-differentiated osteosarcoma of low malignancy arising within a bone, composed of spindle cells arranged in interlacing bundles separated by collagen fibers, with invasion of fatty marrow or extraosseous soft tissue.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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