Cardiac Myxoma Associated With Supraventricular Tachycardia as an Unusual Cause of Unilateral Pulmonary Edema.

A 34-year-old man with sudden palpitations, dyspnea, and chest pain was found to have tachycardia and unilateral pulmonary congestion. Intravenous adenosine restored sinus rhythm. Imaging and pathology confirmed an atrial myxoma with severe mitral regurgitation, requiring surgical excision and mitral valve replacement. This case highlights the complex and rare presentations of cardiac myxomas.