Table 3: CT findings by histologic subtype.

MineralizationSoft-tissue massExostosis
PresentPeripheralCentralBimorphicPresentExtracompartmentalCortical obliterationNecrosisPresentCorticomedullary continuityCartilage cap

MFH-like subtype66267772211
OSA-like subtype44234431321
SCS-like subtype22222210101

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