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The Heart Tumor No One Talks About: Atrial Myxoma Symptoms You Might Miss

When most people think about heart problems, they picture blocked arteries or irregular rhythms. But there’s a lesser-known cardiac condition that can cause serious complications yet often goes undiagnosed for months or even years: atrial myxoma. This rare heart tumor accounts for approximately 50% of all primary cardiac tumors, yet many people have never heard of it. Even more concerning, its symptoms can easily be mistaken for other common conditions, leading to delayed diagnosis and treatment

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 “Left Atrial Myxoma - A Tumor in Transit”

Cardiac myxoma is the most common type of primary cardiac neoplasm. Over 70% of all cardiac myxomas originate from the left atrium (LA) and 18% from the right atrium (RA). Most myxomas present with constitutional, embolic, and obstructive manifestations.

Articles of Interest

Atrial Myxoma: A Case Presentation and Review

Once a presumptive diagnosis of myxoma has been made on imaging studies, prompt resection is required because of the risk of embolization or cardiovascular complications, including sudden death. The results of surgical resection are generally very good, with most series reporting an operative mortality rate under 5 percent

Atrial Myxoma: Trends in Management

Myxomas are frequently located in left atrium and produce symptoms when they fragment and cause systemic emboli or when they interfere with cardiac valvular function and cause pulmonary congestion.

Cardiac myxoma

Approximately 20% of patients are asymptomatic, with myxomas being found incidentally on imaging of the heart 7. Presumably, as the amount of imaging increases, so will this figure. Clinical features are variable and depend on the location and other associated pathology, e.g. valve destruction.

Cardiac myxomas as great imitators: A rare case series and review of the literature

Cardiac myxomas are difficult to detect due to the lack of specific signs and symptoms and even benign tumors can cause serious consequences.

Left atrial myxoma: always so benign?

Primary tumour of the heart are rare. Cardiac myxomas are the most common ones and usually described as benign masses but they have the potencial to cause serious embolic complications and heart failure.

Let’s Get Visual: Left Atrial Myxomas

Atrial myxoma is a benign, noncancerous tumor usually occurring in the left atrium. Lesion size differs widely among patients, but generally ranges from 2 to 6 cm. Depending on the size and location, it may cause mitral valve obstruction and pulmonary hypertension.

Recurrent Left Atrial Myxoma: The Significance of Active Surveillance

Cardiac myxoma recurrence is uncommon following surgical resection. Recurrence is about 2-3% in familial cases; however, recurrence is uncommon in sporadic cases. Most of the recurrences will occur during the first three to four years.

Right Atrial Myxoma: A Long Journey from Diagnosis to Surgery

Cardiac myxomas cause a wide variety of symptoms through various mechanisms, including embolization, obstruction of circulation through the heart, interference with heart valves, direct invasion of the pericardium or adjacent lung, and constitutional symptoms such as fatigue, peripheral edema, hepatomegaly, ascites, and prominent A waves on echocardiogram. Syncope is a rare presentation.3

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StatPearls

Atrial myxoma represents the most common primary cardiac tumor in adults and most frequently originates from the interatrial septum of the left atrium. Although histologically benign, atrial myxomas pose substantial clinical risk because of their propensity to cause intracardiac obstruction, systemic embolization, and inflammatory or constitutional symptoms. Clinical manifestations vary widely and may include exertional or positional dyspnea, syncope, stroke, peripheral emboli, fever, weight loss, or malaise related to cytokine release.