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Giant coronary artery aneurysm in the atrial septum

Kotone Tsujimoto1, Kazuhiro Osawa2, Hideo Yoshida3

  • 1Department of Surgery, Kawasaki Medical School Kawasaki Hospital, Okayama, Japan ktnooe.5717@gmail.com.

BMJ Case Reports
|June 8, 2024
PubMed

Insights

A rare giant coronary artery aneurysm originating from the right coronary artery (RCA) was discovered in a patient with atrial fibrillation. Surgical resection was successful, highlighting this rare cardiac anomaly.

Area of Science:

  • Cardiology
  • Vascular Surgery
  • Diagnostic Imaging

Background:

  • Patient presented with paroxysmal atrial fibrillation, scheduled for catheter ablation.
  • Pre-procedural imaging revealed an incidental large right atrial mass and a dilated right coronary artery (RCA).

Observation:

  • Contrast-enhanced CT identified a large (52x52 mm) homogeneous right atrial mass.
  • Coronary angiography demonstrated a significant fistula connecting the RCA to the right atrial mass.

Findings:

  • The mass was surgically resected and confirmed as an extremely rare giant coronary artery aneurysm originating from the RCA.
  • The aneurysm was attached to the atrial septal wall, with a feeding artery directly from the RCA.

Implications:

  • This case underscores the importance of thorough vascular evaluation in patients with cardiac anomalies.
  • Successful surgical management of giant coronary artery aneurysms is feasible.
  • Highlights a rare etiology for cardiac masses and potential vascular complications.

Keywords:
Heart failureIschaemic heart disease

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