Cor Triatriatum Sinister Identified after New Onset Atrial Fibrillation in an Elderly Man

Figure 3

Transesophageal echocardiogram. 2-chamber view (a), 4 chamber view (b), biplane view (c), and 3D mode (d) showing the left atrium divided by a large fenestrated fibromuscular membrane consistent with cor triatriatum sinister.

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(b)

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