[Pseudoxanthoma elasticum with aortic insufficiency and arterial hypertension in a 12-year-old boy].

Hypertension was found in a 12 year-old Tunisian boy in the weeks following an aortic valvular replacement for aortic regurgitation which was surmised to be rheumatic in origin. In fact, the hypertension and aortic regurgitation were due to the Gröenblad-Strandberg syndrome, or pseudoxanthoma elasticum. The origin of the hypertension was demonstrated by selective renal angiography which showed interruption of the distal cortical renal arteries.