CTICasesWatchman Left Atrial Appendage Occlusion Device
Imaging findings
Chest radiograph and CT angiography demonstrate a parachute- or umbrella-shaped metallic device correctly deployed within the orifice of the left atrial appendage. There is no evidence of residual flow into the appendage or peridevice thrombus.
Key takeaways
The Watchman device is a permanently implanted left atrial appendage occlusion device designed to reduce the risk of thromboembolism in patients with non-valvular atrial fibrillation who have a high risk of bleeding on long-term oral anticoagulation. Recognizing the classic imaging appearance of this device on chest radiography and CT is crucial to avoid misinterpreting it as an intravascular foreign body or surgical clip.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Necrobiotic Rheumatoid Nodules Causing Pneumothorax and PneumomediastinumAutoimmune
- Diaphragmatic Intramuscular HematomaTrauma
- Eisenmenger Syndrome (Secundum Atrial Septal Defect) with Pulmonary Arterial Atherosclerosis and In Situ ThrombosisCongenital
- Bizarre Cystic Lung Disease in Monoclonal Gammopathy (MGUS) and Cirrhosis with Hepatopulmonary SyndromeMetabolic
- Lung Abscess secondary to Perforated Esophageal CancerNeoplastic
- Right Phrenic Nerve Injury and Hemidiaphragm Paresis post Left Atrial CryoablationIatrogenic
- Bilobed Bronchogenic CystCongenital
- Giant Benign Schwannoma of the ThoraxNeoplastic
See all cases from March 9, 2017 →