Abstract
The reconstruction of the vasa vasorum in the autogenous venous graft and homogenous venous graft was investigated microangiographically and histologically. The vasa vasorum began to be reconstructed within 1 week and were accomplished 2 to 3 months after the operation. The reconstructed vasa vasorum formed rich networks in the media and adventitia, similarly to those of the normal vein. The thickening of graft walls was not found to be progressive with time after 2 months. In autografts enclosed in the Tetoron sheet, leakage at the suture line, perforation and degeneration etc. were found. In homografts, late thrombosis was recognized frequently, and its etiology was discussed.
