Fig. 2From: Drug-induced de novo thrombotic microangiopathy diagnosed 2 years after renal transplantation: a case report and literature reviewa Periodic acid-Schiff stain b Masson trichome stain was used. Pathologically, the allograft biopsy showed atrophy and fibrosis of the tubules, diagnosed as moderate interstitial fibrosis and tubular atrophy (IF/TA, Grade II), according to the Banff classification of 2017Back to article page