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Updated: Jun 25, 2026

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
A disappearing left atrial thrombus
Takashi Matsuyama1, Ikuo Satoh, Takafumi Akagami
1Nishinomiya Kyoritsu Neurosurgical Hospital, Department of Laboratory Medicine, Nishinomiya, Japan. matsuyama.takashi@nk-hospital.or.jp
Insights
Transthoracic echocardiography visualized a migrating left atrial thrombus in an elderly patient with atrial fibrillation. This real-time imaging enabled prompt diagnosis and treatment of cardioembolic stroke, highlighting echocardiography's diagnostic value.
Area of Science:
- Cardiology
- Neurology
- Diagnostic Imaging
Background:
- Atrial fibrillation is a common risk factor for cardioembolic stroke.
- Left atrial thrombus formation is a known complication of atrial fibrillation.
- Accurate and timely diagnosis of stroke etiology is crucial for effective treatment.
Observation:
- A case study involving an elderly patient diagnosed with atrial fibrillation.
- Direct visualization of a migrating left atrial thrombus using transthoracic echocardiography.
- Real-time observation of the thrombus's left atrial-ventricular-aortic path.
Findings:
- Transthoracic echocardiography successfully identified a mobile left atrial thrombus.
- The thrombus's migratory path was documented, indicating a high risk of embolism.
- The diagnosis facilitated prompt intervention for acute cardioembolic cerebral infarction.
Implications:
- This case underscores the critical role of transthoracic echocardiography in diagnosing stroke, particularly in identifying cardiac sources of embolism.
- Real-time echocardiographic visualization can guide immediate therapeutic decisions in stroke management.
- The findings emphasize the importance of echocardiography in evaluating patients with atrial fibrillation and suspected embolic events.
Abstract:
The authors report a case of a migrating left atrial thrombus identified under direct visualization using transthoracic echocardiography in an elderly patient with atrial fibrillation. The left atrial-ventricular-aortic course of the thrombus was observed in real time, and prompt diagnosis and treatment of an acute cardioembolic cerebral infarction were performed. This case provides an example of the importance of transthoracic echocardiography in the diagnosis of stroke.
Related Concept Videos
Venous Thrombosis I: Introduction
Cardiac Catheterization III: Left Heart Catheterization
Mitral Stenosis II: Clinical features and Diagnostic Tests
Mitral Stenosis I: Introduction

