Rare Case of Atrial Myxoma with Mitral Regurgitation - Case Report

Abstract

Atrial myxomas are the most common primary cardiac tumors, typically arising from the left atrium. However, their presentation can vary widely, with mitral regurgitation being a rare but significant complication. This report discusses a rare case of atrial myxoma associated with severe mitral regurgitation in a 45-year-old patient presenting with dyspnea and palpitations. The interatrial septum was connected to a massive, pedunculated mass that prolapsing into the left ventricle during diastole caused considerable regurgitation and occlusion of the mitral valve, as seen by echocardiography. The patient's hemodynamic instability necessitated urgent surgical intervention. The tumor was successfully excised, and mitral valve repair was performed. Histopathological examination confirmed the diagnosis of atrial myxoma. Postoperative recovery was uneventful, with significant improvement in symptoms and echocardiographic findings. The significance of taking atrial myxoma into account while making a differential diagnosis for mitral regurgitation is demonstrated by this instance, particularly in those with unexplained cardiac symptoms.

Early diagnosis and prompt surgical management are crucial to prevent potential complications such as embolization, heart failure, or sudden cardiac death. This case also underscores the role of echocardiography as a vital diagnostic tool in identifying and assessing cardiac masses and associated valvular dysfunction.