05.03.03 – Aneurysm of atrial septum

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IPCCC Term ANEURYSM OF ATRIAL SEPTUM

IPCCC Code 05.03.03

ICD-11 Code PENDING

Synonyms PENDING

Abbreviations PENDING

IPCCC Definition A congenital cardiac finding in which the septum primum is abnormally large (redundant) and results in aneurysmal protrusion into one or both atria.

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05-03-03 The right atrium and ventricle have been opened in clam-shell fashion and this anterior view of the atrial septum demonstrates an abnormally large, redundant flap valve (primary atrial septum) at the floor of the oval fossa resulting in aneurysmal protrusion into the right atrium. The tricuspid valve guards the inlet of the right ventricle.
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