Left Atrial Appendage Mimicking Coronary Aneurysm and Thrombus on Echocardiography in a Child with Kawasaki Disease
Year: 2026
Type: article
Study design: Case Report
Abstract: Background: The left atrial appendage (LAA) is an embryologically distinct structure with anatomical features that may mimic pathological findings on echocardiography. In Kawasaki disease, this resemblance can cause diagnostic confusion with coronary artery aneurysm or thrombus. Clinical presentation: A 7-year-old boy presented with fever lasting more than five days and cervical lymphadenopathy following a viral illness. Kawasaki disease was suspected. Transthoracic echocardiography suggested an abnormality of the left coronary artery with possible thrombus, and the patient was started on aspirin, clopidogrel, and apixaban. Coronary computed tomography angiography demonstrated normal coronary origins, course, and caliber, confirming the suspected lesion to be the LAA. Conclusion: The LAA may course adjacent to the left coronary artery and mimic a coronary aneurysm. Multimodality imaging is essential for accurate diagnosis.
Authors: Anhar Ali Baeshen, Riad Abouzahr, Jameel alata
Institution: King Faisal Specialist Hospital & Research Centre
Language: English
Subfield: Surgery
Field: Medicine
Domain: Health Sciences
Open Access status: diamond
OpenAlex ID: W7169652816
FWCI:
Cites:
Cited by:
Related to: