Figure 97

BANFF CLASSIFICATION OF RENAL The Banff classification of renal allograft rejection. This schema is

ALLOGRAFT REJECTION an internationally agreed on standardized classification of renal allograft pathology that regards intimal arteritis and tubulitis as the main lesions indicative of acute rejection [6].

Normal

Patchy mononuclear cell infiltrates without tubulitis is not uncommon Borderline changes

No intimal arteritis; mild tubulitis and endocapillary glomerulitis Acute rejection Grade I: tubulitis ++ Grade II: tubulitis with glomerulitis

Grade III: intimal arteritis, interstitial hemorrhage, fibrinoid, thrombosis

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