Figure 12.

Midgraft segments of two in-vitro endothelialised femoro-popliteal grafts explanted at the time of re-operation for graft failure 41 months (A,C) and 63 months (B) after implantation. Both specimens contained other areas of more significant stenoses but the displayed pre-stenotic regions were packed with large islands of foam cells. Typically, the foam cells were wedged underneath pannus-like, cell-poor tissue that occasionally showed stretches of complete acellularity (B). From (80) with permission.