Key result
TEE, CTA, and CMR identify a rare absent LAA before planned AF ablation.
Why the study?
Absence of the left atrial appendage is an extremely rare condition typically diagnosed incidentally during pre-procedural imaging before atrial fibrillation surgery.
Case Report (n=1)
Multimodality imaging including TEE, CTA, and MRI can confirm the extremely rare diagnosis of congenital left atrial appendage absence prior to atrial fibrillation ablation.
Multimodality imaging may identify congenital LAA absence before AF ablation; extends sparse case reports on this rare variant.
The absence of left atrial appendage ( LAA ) is an extremely rare disease, which is usually diagnosed by chance in imaging examinations before atrial fibrillation surgery. Here, we report a rare case of left atrial appendage loss in a 67-year-old man who planned to undergo radiofrequency catheter ablation of atrial fibrillation. We observed LAA deficiency in transesophageal echocardiography (TEE) and further refined left atrial CTA imaging and cardiac magnetic resonance imaging ( MRI ) to confirm this diagnosis.
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An et al. (2023) conducted a case report in Left atrial appendage absence and atrial fibrillation (n=1). Transesophageal echocardiography, CTA, and cardiac MRI was evaluated. A rare case of left atrial appendage absence was identified in a 67-year-old man using transesophageal echocardiography, CTA, and cardiac MRI prior to planned atrial fibrillation ablation.
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