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Mesh term Cor Triatriatum

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Heart Defects, Congenital

Description

A malformation of the heart in which the embryonic common PULMONARY VEIN was not incorporated into the LEFT ATRIUM leaving behind a perforated fibromuscular membrane bisecting the left atrium, a three-atrium heart. The opening between the two left atrium sections determines the degree of obstruction to pulmonary venous return, pulmonary venous and pulmonary arterial hypertension.



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jenkins-FCD Prod-388 89e904233d719332173309c68ab82b0b2a78a3a7