CTICasesExtrapleural Lipoma
Imaging findings
Radiographs and CT show a low-attenuation (fat density) extrapleural mass in the chest wall, demonstrating the incomplete border sign and bulging into both the chest cavity and the intercostal space without rib destruction.
Key takeaways
Extrapleural lipomas are benign fatty tumors that can arise between the intercostal muscle layers. They present with classic extrapleural sign findings and require no intervention once fat attenuation is confirmed on CT.
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