CTICasesAggressive Solitary Fibrous Tumor of the Pleura with Rib Invasion
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Imaging findings
Chest radiograph demonstrates a mass with an incomplete border sign, suggesting an extrapulmonary location. CT reveals a hypervascular and heterogeneous pleural mass causing periostitis, irregularity, and an acute fracture of the underlying rib, with signs of subacute healing of a prior fracture. Clips are present from a previous procedure.
Key takeaways
Solitary fibrous tumors of the pleura, while typically benign, can exhibit aggressive features such as hypervascularity, heterogeneity, high mitotic rate, and local invasion into adjacent structures like ribs, potentially causing periostitis and pathological fractures. Incomplete border sign is a useful radiographic clue for extrapulmonary masses. Complete resection with negative margins is important due to local recurrence risk.
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