[Prosthesis of knitted dacron velour: an unusual case of late complications].

A case of aneurysmal dilatation of the right branch of a knitted dacron velour prosthesis and then of pseudoaneurysm from its termino-lateral aortic insertion 9 and 10 years after implantation is reported. Histological examination carried out on the prosthesis caused great perplexity in both cases as there were evident signs of fibre fragmentation by polynucleate elements.