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Aberrant right subclavian artery: further observations
AJR. American Journal of Roentgenology
|February 1, 1987
Summary
Radiographic findings for aberrant right subclavian artery were analyzed. Key indicators include aortic knob anomalies and retrotracheal opacity, with two findings potentially representing new observations.
Area of Science:
- Radiology
- Cardiovascular Imaging
- Thoracic Radiology
Background:
- Aberrant right subclavian artery (ARSA) is a congenital anomaly.
- Diagnosis often relies on imaging, but characteristic radiographic findings require further elucidation.
Purpose of the Study:
- To identify and characterize the radiographic findings of aberrant right subclavian artery on posteroanterior and lateral chest radiographs.
Main Methods:
- Review of 101 posteroanterior and 89 lateral chest radiographs from patients with confirmed ARSA.
- Analysis of specific visual cues on both views, noting their frequency.
Main Results:
- Posteroanterior findings: oblique edge from aortic knob (60%), vessel visibility in trachea (43%), medial clavicular mass effect (32%).
- Lateral findings: retrotracheal opacity (79%), aortic arch obscuration (62%), posterior tracheal imprint (49%).
- Tubular opacity and mass effect in the medial clavicular area are presented as novel observations for ARSA.
Conclusions:
- Specific radiographic signs on chest X-rays can suggest aberrant right subclavian artery.
- Retrotracheal opacity and aortic arch obscuration are common on lateral views.
- The identified "tubular opacity" and "mass effect" warrant further investigation as potentially new diagnostic indicators for ARSA.