Diffuse infiltration of PCAR was defined as score i3 in Banff classification or described as “Diffuse.” By contrast, less than i2 was described as “Focal.” ND: no data; VR: vascular rejection; RTx: renal transplantation; TG: transplant glomerulitis; DSA: donor-specific antibody; ABMR: antibody-mediated rejection; mPSL: methylprednisolone; PEX: plasma exchange; IVIG: intravenous immunoglobulin; Rit: Rituximab; OKT3: Muromonab-CD3; DSG: deoxyspergualin.