Left atrial giant myxoma with mitral valve obstruction

Abstract Myxomas are the most common primary cardiac tumors, predominantly found in the left atrium. They can present with various symptoms, including cardiac manifestations such as heart failure, arrhythmias, stroke, and systemic findings. Surgical resection of myxomas has a favorable prognosis with low complication rates. This case report presents a 41-year-old man with dyspnea, abdominal distension, and edema diagnosed with a giant left atrial myxoma. Successful surgical removal resulted in symptom resolution. Cardiac myxomas are rare, with a prevalence of about 0.03% in the general population. Clinical manifestations, including intracardiac obstruction, embolization, and constitutional symptoms, depend on the tumor's location, size, and mobility. Echocardiography is essential for diagnosis, while additional imaging techniques such as CT and MRI can provide further information. Surgical excision is typically necessary to prevent embolization, with favorable outcomes, although there is a risk of arrhythmias, conduction abnormalities, recurrence, and development of new lesions.