PAS x40 - RCPA

Quantitative criteria for fibrous intimalthickening (cv) score:cv0no chronic vascular changecv1 vascular narrowing of up to 25% of luminal area byfibrointimal thickening of arteries ± breach of internal elasticlamina or presence of foam cells or occasional mononuclearcells*cv2 increased severity of above changes with 26-50% narrowingof vascular luminal area*cv3 severe vascular changes with >50% narrowing of vascularluminal area* in most severely affected vessel; note if lesions characteristic ofchronic rejection (elastica breaks, inflammatory cells or fibrosis)are seen