CTICasesMigratory Pleural Calcification (Pleural Mouse / Pleural Lift)
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Imaging findings
A small, calcified pleural lesion is identified in the lower pleura. Comparison with a scan from nine years prior shows the same lesion in a different, higher location, demonstrating migration.
Key takeaways
Migratory pleural calcifications (also known as pleural mice or pleural lifts) are small, mobile calcified nodules within the pleural space. They are thought to be calcified fibrin bodies that are free-floating or loosely adherent. They are benign incidental findings, though their etiology is often unclear (e.g., related to prior trauma or inflammation).
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