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Related Experiment Videos

The aortic isthmus

D K Yousefzadeh, K C Chow, E A Franken

    Radiology
    |September 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    Radiographs of infant aortas can mimic coarctation of the aorta due to an unusual aortic knob, isthmus, and descending aorta shape. Recognizing this normal variant prevents misdiagnosis and unnecessary cardiac catheterization procedures.

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    Area of Science:

    • Pediatric Radiology
    • Cardiovascular Imaging
    • Anatomical Variations

    Background:

    • Coarctation of the aorta is a congenital heart defect that narrows the aorta.
    • Diagnostic imaging is crucial for identifying aortic abnormalities in infants.
    • Anatomical variations can sometimes mimic pathological findings.

    Purpose of the Study:

    • To describe an aortic anatomical variation that resembles coarctation of the aorta on chest radiographs.
    • To raise awareness among clinicians regarding this specific imaging finding.
    • To prevent potential misdiagnosis and unnecessary invasive procedures.

    Main Methods:

    • Retrospective review of chest radiographs from seven infants.
    • Analysis of the morphology of the aortic knob, isthmus, and descending aorta.

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  • Comparison of imaging findings with known features of coarctation of the aorta.

    • Main Results:

    • Chest radiographs revealed a "figure 3" sign in the aorta, characteristic of coarctation.
    • This finding was attributed to a specific configuration of the aortic knob, isthmus, and descending aorta.
    • The observed pattern was identified as an anatomical variation, not true coarctation.

    Conclusions:

    • Anatomic variation in the aortic arch can present imaging findings similar to coarctation of the aorta.
    • Radiologists and clinicians should be aware of this variation to avoid misdiagnosis.
    • Recognition of this variant can prevent unnecessary cardiac catheterization in infants.