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  • Title: [Fibrous hyperplasia in femoro-popliteal bypasses using treated human umbilical veins].
    Author: Guidoin R, Roy PE, Langeron P, Puppinck P, Paynter R, Gosselin C.
    Journal: J Mal Vasc; 1987; 12(4):329-33. PubMed ID: 3694057.
    Abstract:
    The authors report two clinical cases of the failure due to fibrous hyperplasia of processed human umbilical vein (HUV) grafts employed as femoro-popliteal bypasses. Failure occurred after 19 months implantation at the proximal anastomosis for one graft and after 10 months at the distal anastomosis for the other. Fibrous hyperplasia was the principal cause of reoperation. The lightly vascularized, more or less compacted fibrin involved, adhering loosely to the HUV, remains thrombogenic at the blood-contacting surface. Superposed onto this phenomenon which is widespread in laboratory animals but uncommon in humans, are the usual causes of failure: delamination of the HUV wall, lipid uptake and bacterial colonization.
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