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Vascular and Endovascular Surgery
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Aneurysm Formation and Perforation in Glutaraldehyde-Tanned Umbilical Vein Grafts

G.B. Ratto

Dept. of Semeiotica Chirurgica la, University of Genoa

P. Romano

Inst. of Anatomia Umana Normale, University of Genoa

M. Truini

Dept. of Anatomia Patologica , University of Genoa, Genoa, Italy

A. Badini

Dept. of Anatomia Patologica , University of Genoa, Genoa, Italy

D. Zaccheo

Inst. of Anatomia Umana Normale, University of Genoa

G. Motta

Dept. of Semeiotica Chirurgica la, University of Genoa

Dilatation and perforation of the prosthetic wall represent major problems limiting long-term function of biologic arterial substitutes. One case of multiple aneurysm formation and one of graft wall perforation, occurring nine and three years, respectively, after human umbilical vein (HUV) femoropopliteal recon structions, are reported. Both grafts were well functioning. At microscopic ex amination, the aneurysmal HUV wall showed no degenerative changes, while appearing thinner with respect to the undilated zones (about one third). The HUV flow surface remained thromboresistant, except for the dilated areas. Par tial endothelialization of the inner graft surface was documented. In conclusion, the risk of HUV graft dilatation and perforation increases when function is maintained for periods longer than three years from implantation. However, the umbilical vein retains over time its thromboresistant properties.

Vascular and Endovascular Surgery, Vol. 24, No. 5, 340-345 (1990)
DOI: 10.1177/153857449002400507
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