An Exceptional Cardiac Myxoma Case Defying Convention

Background: Cardiac myxomas, the most common primary heart neoplasms, primarily originate in the left atrium and carry the potential for serious complications, including mitral valve obstruction and embolic events. Here, we report a rare case of a left atrial myxoma leading to complete atrioventricular block. Objectives: through this case we aim to highlight the variety and complexity of cardiac myxomas Observation: A 60-year-old male, with no history of diabetes or hypertension, presented with exertional dyspnea (NYHA class III), lipothymia, and a diastolic murmur in the mitral area. Extensive evaluation revealed a third-degree atrioventricular block. Urgent surgery successfully removed the myxoma, and a permanent pacemaker was implanted postoperatively. The patient had an uneventful recovery and improved during follow-up. Discussion: Cardiac myxomas are rare, accounting for approximately 0.2% of all neoplasms. Clinical presentations vary, with many patients remaining asymptomatic until complications occur. Echocardiography is essential for detection, while electrocardiographic abnormalities may provide diagnostic insights. Surgical removal is the standard treatment, emphasizing the importance of timely intervention. Conclusion: Cardiac myxomas present a diverse clinical spectrum, highlighting the need for timely detection and intervention. Surgical removal remains crucial to prevent complications and secure favorable patient outcomes.