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. 2023 Oct 10;10:1218582. doi: 10.3389/fcvm.2023.1218582

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© 2023 Wang, Song, Liu, Zhang, Bi, Liu, Ma and Li.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Preoperative cardiac CT angiography reveals a complex left atrial appendage with a large branch, no clear filling defect in the left atrial appendage and left atrium, and no diverticulum and accessory atrial appendage was identified in the left atrium (A) the cross-sectional image of the LAA orifice (B) the long diameter was about 2.4 cm, the short was about 2.2 cm. Oblique view (C) the maximum depth of the left atrial appendage branch was about 4.2 cm. Pericardial effusion.