CTICasesLow-grade rib chondrosarcoma
Imaging findings
CT scan shows an expansile mass arising from the anterior rib cartilage with classic chondroid matrix calcifications, which had grown slowly over a two-year period compared to prior scans.
Key takeaways
Low-grade chondrosarcomas of the ribs can grow very slowly and initially mimic old fractures or benign osteochondromas. Costal cartilage location and progressive nodular chondroid calcification are key features.
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