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Inferior and right-sided juxtaposition of the left atrial appendage with an unexpected type of inter-atrial communication

Lookup NU author(s): Professor Bob Anderson


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We have re-investigated an unusual cardiac specimen with juxtaposition of the atrial appendages. The original description dates to 1962, when the autopsy was performed at the Children's Memorial Hospital in Chicago, now Ann & Robert H. Lurie Children's Hospital of Chicago. The heart was subsequently stored in the Farouk S. Idriss Cardiac Registry at the same institution. The specimen shows usual atrial arrangement, but with the morphologically left appendage juxtaposed in a rightward manner, passing behind the heart rather than through the transverse sinus so as to reach its location inferior to the morphologically right appendage. The heart also demonstrated an inter-atrial communication between the cavities of the juxtaposed left appendage and the morphologically right atrium. We provide a detailed description of the morphology, and provide images of this lesion, which to the best of our knowledge has not previously been described.

Publication metadata

Author(s): Sarwark AE, Anderson RH, Spicer DE

Publication type: Article

Publication status: Published

Journal: Cardiology in the Young

Year: 2016

Volume: 26

Issue: 1

Pages: 179-182

Print publication date: 01/01/2016

Online publication date: 12/03/2015

Acceptance date: 19/01/2015

ISSN (print): 1047-9511

ISSN (electronic): 1467-1107

Publisher: Cambridge University Press


DOI: 10.1017/S1047951115000165


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