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Atrial myxoma is the most common primary benign tumor of the heart, most frequently arising in the left atrium. It usually develops from the interatrial septum and can vary in size, shape, and mobility. Although noncancerous, an atrial myxoma can become life-threatening if it obstructs blood flow through the heart or releases fragments that travel to other organs, causing embolic events such as stroke.

Symptoms depend on the tumor's size and position. Many patients experience shortness of breath, fatigue, chest pain, dizziness, fainting, palpitations, or swelling in the legs. Some individuals develop fever, weight loss, or joint pain due to inflammatory substances produced by the tumor. In certain cases, the condition remains symptom-free until discovered during routine cardiac imaging.

Diagnosis is primarily made using echocardiography, which clearly visualizes the tumor. Cardiac MRI or CT scans may provide additional details before treatment. Surgical removal is the standard treatment and is generally recommended soon after diagnosis to reduce the risk of complications. Most patients recover well following surgery, with a low chance of recurrence, particularly in sporadic cases.

Prompt diagnosis and timely surgical intervention offer an excellent prognosis, helping restore normal heart function and prevent serious complications such as stroke, heart failure, or sudden cardiac obstruction.