Giant Left Atrium due to Probable Rheumatic Disease and Atrial Functional Mitral Insufficiency

Introduction

Giant left atrium is a rare condition, and most cases described in the literature are associated with rheumatic disease. However, some clinical descriptions suggest a nonrheumatic etiology for this condition, in which characteristic findings of rheumatic disease are not identified or anatomopathological findings do not suggest a specific etiology.

Atrial fibrillation is present in almost all cases and contributes to the maintenance of left atrial remodeling and persistent changes in structure and function.

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