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Updated: Jul 16, 2026

Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques
Published on: June 11, 2019
Acute heart failure and near-syncope associated with giant left atrial ball thrombus occluding left ventricular
Kenan Yalta1, Ahmet Yilmaz, Okan Onur Turgut
1Department of Cardiology, Cumhuriyet University, Sivas 58100, Turkey. hyalta@gmail.com
Insights
A giant left atrial ball thrombus caused acute heart failure and syncope by blocking blood flow. Surgical removal resolved the obstruction and symptoms in this patient.
Area of Science:
- Cardiology
- Cardiac Surgery
- Pathology
Background:
- Acute heart failure and syncope can present with various underlying cardiac pathologies.
- Left atrial masses, though uncommon, pose significant risks due to potential hemodynamic compromise.
Observation:
- A 70-year-old female presented with acute heart failure and near syncope.
- Transthoracic and transesophageal echocardiography revealed a large, mobile left atrial mass (4.9 x 3.9 cm).
- The mass obstructed the left ventricular inflow tract supravalvularly, despite normal mitral valve leaflets.
Findings:
- The resected left atrial mass was pathologically confirmed as thrombus, consistent with a left atrial ball thrombus (LABT).
- The obstruction of the left ventricular inflow tract by the giant LABT was the direct cause of the patient's acute diastolic heart failure and syncope.
Implications:
- Giant LABTs are a critical cause of acute heart failure and syncope, necessitating prompt diagnosis and intervention.
- Emergent surgical excision is crucial for managing symptomatic LABTs causing significant hemodynamic compromise.
- This case highlights the importance of echocardiography in identifying intracardiac masses and guiding urgent surgical management.
Abstract:
A 70-year-old female patient was admitted to our department with symptoms and signs of acute heart failure and near syncope. After hospitalization, both transthoracic echocardiography (TTE) and subsequent transesophageal echocardiography (TEE) demonstrated a giant (4.9 x 3.9 cm) mobile, irregular, bright left atrial mass consistent with left atrial ball thrombus (LABT). The mass was found to occlude the left ventricular inflow tract (LVIT) above the mitral orifice (supravalvular) in the presence of normal mitral leaflets. After emergent surgical excision, the pathology of the left atrial mass was found to be consistent with thrombus. The case presented here suffered acute diastolic heart failure and near-syncope due to obstruction of the LVIT above the mitral orifice by a giant LABT.
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