CTICasesRib Plasmacytoma
[...]. Rib Plasmacytoma. CTICases. Published February 1, 2017. https://str-case-explorer.pages.dev/c/uurea
Imaging findings
Lateral chest radiograph shows a subtle extrapleural mass projecting over the posterior chest wall with an incomplete border sign and associated rib destruction. Frontal radiograph demonstrates a corresponding faint, ill-defined opacity. CT confirms a lytic bone lesion of the posterior rib with an associated soft tissue mass, consistent with a plasmacytoma.
Key takeaways
Plasmacytomas of the ribs typically present on chest radiographs as extrapleural masses with obtuse margins (the incomplete border sign) and associated osteolytic rib destruction. The lateral projection is highly effective for localizing posterior chest wall lesions.
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