Remarkable giant right atrial diverticulum in asymptomatic patient

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Updated: Jun 24, 2026

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
07:41

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure

Published on: February 8, 2022

Kota Agematsu1, Toru Okamura, Kazuaki Ishihara

  • 1Department of Cardiovascular Surgery, Tokyo Women's Medical University, Tokyo, Japan. agematsuagain@yahoo.co.jp

Interactive Cardiovascular and Thoracic Surgery
|March 31, 2009
PubMed

Insights

A giant right atrial diverticulum, though asymptomatic, was surgically resected due to risks of blood clots, irregular heartbeats, and rupture. Surgical intervention is recommended for large diverticula to prevent serious complications.

Area of Science:

  • Cardiology
  • Cardiac Surgery

Background:

  • Right atrial diverticulum is a rare cardiac anomaly.
  • Giant diverticula pose significant risks despite asymptomatic presentation.

Observation:

  • A 31-year-old male presented with an asymptomatic giant right atrial diverticulum.
  • Preoperative imaging revealed a large mass on the right atrium.

Findings:

  • Surgical resection confirmed a thin-walled diverticulum composed of fibrous tissue and intima.
  • Pathology excluded muscular tissue in the diverticulum wall.

Implications:

  • Surgical treatment is crucial for large right atrial diverticula.
  • Early intervention mitigates risks of thromboembolism, arrhythmia, and rupture.

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