[Coronary Artery-Left Atrial Fistula Complicated by a Left Atrial Myxoma:Report of a Case]

Area of Science:

• Cardiology
• Cardiac Surgery
• Pathology

Background:

• Left atrial masses are uncommon cardiac findings.
• Coronary artery fistulas typically involve coronary arteries and cardiac chambers or veins.
• The coexistence of a left atrial mass and a coronary artery-left atrial fistula is exceedingly rare.

Observation:

• A patient presented with a left atrial mass.
• Abnormal vascular connections were identified, extending from the right coronary artery and left circumflex artery directly into the left atrial mass.
• Contrast media demonstrated an efflux from the tumor into the left atrium, indicating a fistula.

Findings:

• Surgical resection of the left atrial mass and ligation of the abnormal vessels were successfully performed.
• Post-operative outcomes were favorable.
• Pathological examination confirmed the mass as a myxoma; the precise relationship between the myxoma and the fistula remains undetermined.

Implications:

• This case highlights a unique presentation of a left atrial myxoma associated with a coronary artery-left atrial fistula.
• Successful surgical management demonstrates the feasibility of addressing such complex anatomical abnormalities.
• Further research may elucidate the pathogenesis of myxomas associated with vascular anomalies.