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Saudi Journal of Kidney Diseases and Transplantation
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ORIGINAL ARTICLE Table of Contents   
Year : 2016  |  Volume : 27  |  Issue : 5  |  Page : 921-928
Chronic renal allograft dysfunction in Egyptian population: Histopathological and immunohistochemical study

Department of Pathology, Faculty of Medicine, Cairo University, Cairo, Egypt

Correspondence Address:
Wael M Hamza
Department of Pathology, Faculty of Medicine, Cairo University, Cairo
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DOI: 10.4103/1319-2442.190818

PMID: 27751999

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The chronic dysfunction stands as the most common cause of renal allograft loss. During the nineties of the past century, this condition was referred to as chronic allograft nephropathy (CAN). Since 2005, CAN has been assigned by the eighth Banff schema to four main categories via histopathological and immunohistochemical findings including chronic antibodymediated rejection (CAMR), chronic T-cell-mediated rejection (CTMR), chronic cyclosporine toxicity (CNITOX), and "interstitial fibrosis (IF)/tubular atrophy; not otherwise specified (NOS)" to eliminate the term CAN. We conducted a retrospective study of renal allograft cases with biopsy-proven chronic damage diagnosed at our nephropathology units, between January 2007 and September 2013, to assign them to the defined categories. Differences between groups were tested using one-way analysis of variance. The frequencies of the diagnostic categories were as follow: CNITOX (43.1%), CAMR (27.5%), CTMR (17.6%), and NOS (11.8%). The serum creatinine level, time posttransplant, and global sclerosis frequency were insignificant among the categories. Nine categorized cases showed transplant glomerulopathy; five of them were seen in association with CAMR. There was a positive relationship between the number of interstitial CD8 + T cells and the degree of IF in CTMR cases. Two cases showed combined features of CAMR and CTMR. Protocol renal allograft biopsy starting 3 months after transplantation with proper monitoring and adjustment of the calcineurin inhibitors level may reduce the potential risk of chronic damage in renal allograft.

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