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Right Atrial Myxoma.

T Sikri1, R K Sharma2, P Singh3

  • 1Professor.

The Journal of the Association of Physicians of India
|September 10, 2016
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A large cardiac myxoma in the right atrium caused significant symptoms, including shortness of breath. Surgical removal of the cardiac tumor led to a full recovery and symptom resolution in this patient.

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Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Pathology

Background:

  • Cardiac myxomas are rare primary tumors of the heart, often presenting with obstructive or embolic symptoms.
  • Right atrial myxomas can prolapse through the tricuspid valve, causing significant hemodynamic compromise.

Purpose of the Study:

  • To report a case of a large right atrial myxoma presenting with severe dyspnea.
  • To highlight the diagnostic utility of echocardiography and cardiac MRI in evaluating cardiac masses.
  • To describe the successful surgical management and histopathological findings of a cardiac myxoma.

Main Methods:

  • Clinical presentation and physical examination findings.
  • Diagnostic imaging including transthoracic echocardiography and cardiac MRI.
  • Surgical excision of the cardiac mass.
  • Histopathological examination of the resected tumor.

Main Results:

  • A 54-year-old male presented with dyspnea (NYHA Class III), diaphoresis, and restlessness.
  • Echocardiography and cardiac MRI revealed a large (7x4 cm) mobile mass in the right atrium prolapsing through the tricuspid valve.
  • Histopathology confirmed a cardiac myxoma with a myxomatous matrix and spindle-shaped tumor cells.
  • The patient remained asymptomatic one and a half years post-operative excision.

Conclusions:

  • Right atrial myxoma is a treatable cause of cardiac obstruction and dyspnea.
  • Multimodality imaging is crucial for accurate diagnosis and surgical planning.
  • Complete surgical excision provides excellent long-term outcomes for cardiac myxoma.