1. Basically three different morphological types can be differentiated: Early after transplantation, diffuse intimal thickening or vasculitis predominate; late after transplantation, focal artheriosclerotic plaques are found; and in some patients a type of dilative angiopathy occurs.

Morphologisch kann man vor allem drei Typen unterscheiden: die konzentrische, homogene Intimaverdickung, fokale, exzentrische atherosklerotische Plaques und die dilatierende Angiopathie.