Renal transplants from older deceased donors: Is pre-implantation biopsy useful? A monocentric observational clinical study

Table 1 Histologic score in use for kidney allocation to single kidney transplant or dual kidney transplants of “high-risk” donors

Glomerular global sclerosis	0 = no glomeruli globally sclerosed
	1 = less than 20%
	2 = 20%-50%
	3 = > 50%
Arteries/arterioles wall thickness1	0 = normal appearance
	1 = less than lumen diameter
	2 = equal/slightly higher than lumen diameter
	3 = higher than lumen diameter/severe lumen reduction
Tubular atrophy	0 = absent
	1 = less than 20% tubuli affected
	2 = 20%-50%
	3 = > 50%
Interstitial fibrosis	0 = absent
	1 = less than 20% parenchymal tissue substituted
	2 = 20%-50% tissue
	3 = > 50% tissue

¹The most severe lesion determines the score. The final score is the sum of 4 individual scores: With final score up to 4 (included) organs are allocated to solitary kidney transplantation; from 5 to 7 organs are allocated to dual kidney transplantation; higher than 7 organs are discarded.