Atrial myxoma: case report and a review of the literature
Robert Lee Percell1, Robert J Henning, Maqsood Siddique Patel
1Departments of Medicine, University of South Florida College of Medicine and the James A Haley VA Hospital, Tampa, FL 33612, USA.
Insights
Atrial myxomas, common heart tumors, can cause serious health issues through embolism or obstruction. Early screening and surgical removal are key, with familial screening crucial for recurrence prevention.
Area of Science:
- Cardiology
- Oncology
Background:
- Atrial myxomas represent the most frequent primary benign cardiac tumor, affecting up to 3 in 1000 individuals.
- These tumors are a significant contributor to cardiovascular morbidity and mortality.
- While typically found in the left atrium, familial syndromes can lead to multiple myxomas in unusual locations.
Observation:
- Approximately 50% of patients present with symptoms from embolism or intracardiac obstruction.
- A notable 10% of patients with atrial myxomas remain asymptomatic.
- Screening protocols include comprehensive history, physical examination, and echocardiography (transthoracic and transesophageal).
Findings:
- Transthoracic echocardiography demonstrates ~95% sensitivity for detecting cardiac myxomas.
- Transesophageal echocardiography offers near 100% sensitivity in myxoma detection.
- While most atrial myxomas are sporadic, familial cases necessitate screening of first-degree relatives for occult tumors.
Implications:
- Surgical excision is the primary curative treatment for atrial myxomas.
- Recurrence is a possibility, particularly in patients with underlying familial myxoma syndromes.
- Proactive screening, especially in at-risk families, is vital for managing atrial myxoma complications and recurrence.
Abstract:
Atrial myxomas are the most common benign primary tumor of the heart and occur in as many as 3 in 1000 patients. These tumors are a major cause of patient morbidity and mortality. Although the majority of atrial myxomas occur in the left atrium, 3 separate familial myxoma syndromes can result in multiple myxomas in atypical locations. Approximately 50% of patients with myxomas may experience symptoms due to central or peripheral embolism or intracardiac obstruction, but 10% of patients may be completely asymptomatic. Screening for myxomas should involve a thorough history and physical examination and a transthoracic and/or transesophageal echocardiogram. Transthoracic echocardiography is approximately 95% sensitive for the detection of cardiac myxomas, and transesophageal echocardiography approaches 100% sensitivity. Though the majority of atrial myxomas are sporadic, it is imperative that first-degree relatives of patients with documented myxomas undergo screening for occult myxomas. Surgical removal of the myxoma is the treatment of choice and usually curative; however, myxoma recurrence does occur and is most frequently associated with a familial syndrome.
Related Concept Videos
Mitral Stenosis II: Clinical features and Diagnostic Tests
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Mitral Valve Prolapse I: Introduction
Mitral Valve Prolapse II: Assessment and Management
Cardiomyopathy IV: Restrictive Cardiomyopathy
Myocarditis II: Clinical Features and Diagnostic Tests
