MRI is effective for diagnosing and planning surgery for rare vascular anomalies like an aneurysm of an aberrant left subclavian artery with a right-sided aortic arch.
MRI may aid preoperative planning for rare aortic arch aneurysms; hypothesis-generating and requires prospective validation.
Reports of aneurysms of the subclavian artery in both normal and anomalous aortic arches have been rare. The authors describe a patient with a right-side aortic arch and an aneurysm of the aberrant left subclavian artery, which, to the authors' knowledge, is a previously unreported association. At presentation, the aneurysm appeared as a calcified left superior mediastinal mass. Magnetic resonance imaging enabled preoperative diagnosis and guided surgical planning.
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Benedikt et al. (1991) studied this question.