CTICasesPericardial Cyst
Imaging findings
A large, low-attenuation (watery) cystic lesion in the chest that sags posteriorly on supine CT imaging and has grown slowly over 12 years.
Key takeaways
Pericardial cysts are characteristically mobile ("floppy") and can change position based on the patient's posture (anterior when upright, posterior when supine).
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