[Congenital incomplete aortic-arch-syndrome as a rare cause of cerebral ischemia in consequence of a steal-syndrome (author's transl)].

A subclavian-steal-syndrome of a congenital origin is a rare observation. The authors report on a 27 years old female patient with characteristic symptoms. The vascular deformity consisted of a right-sided aortic arch, a right descending aorta, separate origins of the anonymous and the right carotid arteries, and an aplasia of the proximal parts of the left carotid and the left subclavian arteries. A combined dacron-venous-bypass was placed from the ascending aorta to the left arm-neck arteries and thus cerebral circulation was improved and the patient got free from symptoms. Special problems of morphology and hemodynamics are discussed on the hand of arteriograms.