CTICasesWatchman Left Atrial Appendage Closure Device
Imaging findings
Chest radiographs and CT demonstrate a faint, self-expanding nitinol frame structure configured as a small, umbrella-like device located within the left atrial appendage.
Key takeaways
The Watchman device is a permanently implanted left atrial appendage closure device used to prevent thromboembolism in patients with atrial fibrillation. Radiologists must recognize its specific radiographic appearance to avoid misinterpreting it as a foreign body, displaced cardiac hardware, or other pathology.
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