Table 1: Plain radiograph findings by histologic subtype.

MineralizationSoft-tissue massExostosisTumor luminance
Present<50%>50%BimorphicPresentExtracompartmentalCortical obliterationPresentCorticomedullary continuity

MFH-like subtype92741010871103.9
OSA-like subtype53235543290.4
SCS-like subtype21112211067.6

Abbreviations: malignant fibrous histiocytoma (MFH); osteosarcoma (OSA); spindle-cell sarcoma (SCS).