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Updated: Feb 15, 2026

Murine Echocardiography of Left Atrium, Aorta, and Pulmonary Artery
Published on: February 20, 2017
Post occlusive left atrial appendage thrombosis with extension into the left atrium
Alaa Shalaby1, Marwan Refaat2, Joan Lacomis3
1Division of Cardiology, VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, USA University of Pittsburgh Medical Center: Heart and Vascular Institute, Pittsburgh, Pennsylvania, USA.
Abstract:
A 67-year-old man underwent left atrial appendage (LAA) exclusion concomitant with mitral valve surgery and radiofrequency ablation maze procedure. On transoesophageal echocardiography anticipating ablation for left atrial tachycardia, an echodense thrombus was visualised in the LAA location with apparent intracavitary extension into the left atrium. Based on CT imaging findings, the echo represented thrombosis of a large left atrial appendage with probable extension into the left atrium.
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