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Published online by Cambridge University Press: 19 August 2008
Balloon dilation of native aortic coarctation was performed in a three-month-old boy. Angiography immediately after dilation revealed a localized bulge on the anterior as pect of the descending aorta interpreted initially as an aneurysm. Angiography four months later, however, failed to detect this bulge. We speculate that the early aneurysmal appearance of the anterior wall of the aorta may have been caused by factors other than a tear in the aortic adventitia.