CTICasesLeft Atrial Appendage Occlusion Device (Watchman Device)
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Imaging findings
Frontal chest radiograph reveals a distinct self-expanding nitinol frame device projected over the left atrial appendage region.
Key takeaways
The Watchman device is a transcatheter implant designed to occlude the left atrial appendage in patients with non-valvular atrial fibrillation to mitigate thromboembolic risk. Radiologists must recognize its expected appearance and location on chest radiographs and CT to avoid misinterpreting it as an abnormal metallic foreign body or surgical clip.
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