Table 3.

Kidney pathology findings in COVID-19 and AKI

Patient No.	Main Pathology Finding	Glomeruli (Total/Globally Sclerosed)	IFTA, %	AAS	Electron Microscopy
1	ATN and FSGS/healed collapse	29/4	30	Severe	Moderate segmental effacement of podocyte foot processes
2	ATN with myoglobin cast nephropathy	2/1	20	Moderate	No significant findings
3	ATN	3/1	15	Severe	No significant findings
4	ATN	8/3	15	Mild	No significant findings
5	ATN and early nodular GS	31/9	20	Moderate	Mesangial expansion, thick GBMs
6	ATN and TMA	1/0	Mild	Moderate	Fibrin thrombi, subendothelial widening, endothelial injury
7	Cortical necrosis and TMA	22/0	10	Severe	Fibrin thrombi, subendothelial widening, endothelial injury
8	Crescentic GN and ATN	9/0	10	Mild	Subendothelial widening, endothelial injury
9	ATN on advanced chronic changes	17/12	50	Severe	Thin GBMs (221 nm)
10	ATN on advanced chronic changes	14/10	50	Moderate	Subendothelial widening, endothelial injury

IFTA, interstitial fibrosis and tubular atrophy; AAS, arterial and arteriolar sclerosis; GS, glomerulosclerosis; GBM, glomerular basement membrane.