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Invasive development of right atrial myxoma--a case report
M Nakayama1, K Matsumura, I Abe
1Second Department of Internal Medicine, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
Angiology
|September 1, 1993
Summary
This case study describes a rare cardiac myxoma originating in the right atrium. Histologic analysis suggests a thrombogenic origin, highlighting a unique presentation of this cardiac tumor.
Area of Science:
- Cardiology
- Pathology
Background:
- Cardiac myxomas are typically benign tumors, often presenting with constitutional symptoms or embolic events.
- Right atrial myxomas can cause significant hemodynamic compromise due to their location and potential for obstruction.
Observation:
- A 39-year-old male presented with exertional dyspnea and fever, indicative of a serious cardiac condition.
- Echocardiography revealed a mobile right atrial mass, with MRI demonstrating extension into the superior vena cava.
- Angiography confirmed partial right atrial defect and obstruction of the superior vena cava and innominate veins, with scintigraphy suggesting pulmonary infarctions.
Findings:
- Surgical removal of the right atrial mass was performed.
- The mass was found to be an invasive cardiac myxoma with significant organized thrombi and myxomatous tissue.
- Histological findings strongly suggested a thrombogenic origin for the cardiac myxoma.
Implications:
- This case underscores the importance of considering thrombogenic factors in the histogenesis of cardiac myxomas.
- Understanding the origin of cardiac tumors is crucial for accurate diagnosis and effective treatment strategies.
- The findings contribute to the differential diagnosis of right atrial masses and pulmonary embolism.