EURORAD ESR

Case 14078

Flow artefact mimicking atrial thrombus/mass

Author(s)
Chris Scelsi, Gregory Schaiberger, Jayanth Keshavamurthy

30912 Augusta,
United States of America;
Email:jkeshavamurthy@gru.edu
 
Patient
male, 79 year(s)
 
 
  • Figure 1
    CT
     

    Axial arterial phase CECT demonstrates a round, hypoattenuating pseudothrombus (white arrow) with ill-defined margins that appears to be extending into the left atrium (LA) from the right atrium (RA). This...

     
    Area of Interest: Cardiac; Imaging Technique: CT; Procedure: Contrast agent-intravenous; Special Focus: Artefact;

    Coronal reconstruction demonstrates the pseudothrombus (white arrow) within the IVC which appears to create a filling defect in the left atrium (LA). Anterior slices (not demonstrated here) show the defect continuing...

     
    Area of Interest: Cardiac; Imaging Technique: CT; Procedure: Contrast agent-intravenous; Special Focus: Artefact;

    Sagittal reconstruction shows the pseudothrombus (white arrow) within the IVC and entering the right atrium (RA).

     
    Area of Interest: Cardiac; Imaging Technique: CT; Procedure: Contrast agent-intravenous; Special Focus: Artefact;
     
     
  • Figure 2
    CT
     

    15 minute delayed axial CECT images of the same slice demonstrate resolution of the pseudothrombus which was previously seen within the right atrium (RA). Left atrium (LA).

     
    Area of Interest: Cardiac; Imaging Technique: CT; Procedure: Contrast agent-intravenous; Special Focus: Artefact;

    15 minute delayed axial CECT images demonstrate resolution of the pseudothrombus which was previously seen within the right atrium (RA) and IVC (asterisk). Note the mitral annular calcification (white arrow).

     
    Area of Interest: Cardiac; Imaging Technique: CT; Procedure: Contrast agent-intravenous; Special Focus: Artefact;
     
     
Axial arterial phase CECT demonstrates a round, hypoattenuating pseudothrombus (white arrow) with ill-defined margins that appears to be extending into the left atrium (LA) from the right atrium (RA). This “lesion” measures 89 HU.
 
Coronal reconstruction demonstrates the pseudothrombus (white arrow) within the IVC which appears to create a filling defect in the left atrium (LA). Anterior slices (not demonstrated here) show the defect continuing into the right atrium.
 
Sagittal reconstruction shows the pseudothrombus (white arrow) within the IVC and entering the right atrium (RA).
 
15 minute delayed axial CECT images of the same slice demonstrate resolution of the pseudothrombus which was previously seen within the right atrium (RA). Left atrium (LA).
 
15 minute delayed axial CECT images demonstrate resolution of the pseudothrombus which was previously seen within the right atrium (RA) and IVC (asterisk). Note the mitral annular calcification (white arrow).
 
 
 
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