Mirror artifact mimicking a large atrial mass

Area of Science:

• Cardiology
• Medical Imaging
• Echocardiography

Background:

• Echocardiographic images can present artifacts, leading to misinterpretation of cardiac structures.
• These artifacts stem from various factors including tissue interactions and ultrasound beam properties.

Purpose of the Study:

• To report a case where an artifact was mistaken for a cardiac mass.
• To illustrate the importance of artifact recognition in echocardiography.

Main Methods:

• Case report of a patient with a history of mitral valve repair and tricuspid annuloplasty.
• Echocardiography was used to identify a suspected right atrial mass.
• Computed Tomography (CT) scan was performed for further evaluation.
• Detailed review of echocardiographic images to identify the nature of the finding.

Main Results:

• A suspected right atrial mass was initially observed on echocardiography.
• CT scan was performed to rule out a true mass.
• Re-evaluation of echocardiographic images revealed the finding to be a mirror artifact.
• The tricuspid annuloplasty ring was identified as the source of the strong reflection causing the artifact.

Conclusions:

• Artifacts in echocardiography can mimic serious pathology, such as cardiac masses.
• Careful image review and understanding of artifact generation are crucial for accurate diagnosis.
• Annuloplasty rings can act as strong reflectors, potentially causing mirror artifacts.