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A case of a large Chiari network mimicking a right atrial thrombus

Sevinc Bayer Erdogan1, Serdar Akansel1, Murat Sargın1

  • 1Department of Cardiovascular Surgery, Siyami Ersek Hospital, Istanbul, Turkey.

Northern Clinics of Istanbul
|December 23, 2017
PubMed

Insights

The Chiari network, an incidental finding in the right atrium, can mimic serious conditions like thrombus. Differentiating this remnant structure is crucial for accurate diagnosis and patient management.

Area of Science:

  • Cardiology
  • Embryology
  • Anatomical Pathology

Background:

  • The Chiari network is a fibrous structure in the right atrium, originating from the embryological remnant of the right valve of the sinus venosus.
  • It is typically an incidental finding with no significant clinical impact.
  • Accurate differentiation from other right atrial pathologies is essential.

Observation:

  • A case study involving a 76-year-old male patient is presented.
  • The patient was undergoing coronary artery bypass surgery.
  • A large Chiari network was incidentally discovered.

Findings:

  • The Chiari network presented as a large structure within the right atrium.
  • This finding mimicked the appearance of a right atrial thrombus.
  • The structure was confirmed to be an embryological remnant.

Implications:

  • The case highlights the importance of recognizing the Chiari network to avoid misdiagnosis.
  • Proper identification prevents unnecessary interventions for conditions like atrial thrombus.
  • Understanding this anatomical variant aids in clinical decision-making during cardiac procedures.

Keywords:
Atrial thrombusChiari networkeustachian valvetumor

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