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Twitter Poll (June 26, 2019)

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TCMR, arkana laboratories, renal pathology, kidney biopsy
ANSWER: C Severe intimal arteritis (v2), with or without interstitial inflammation and/or tubulitis is considered acute TCMR Grade IIB based on the Banff 2017 classification. However, we now know that arterial lesions (v>0) may be indicative of ABMR, TCMR or mixed ABMR/TCMR and are not restricted to TCMR. Reference: Haas M, et al. The Banff 2017 Kidney Meeting Report: Revised diagnostic criteria for chronic active T-cell mediated rejection, antibody-mediated rejection, and prospects for integrative endpoints for next-generation clinical trials. Am J Transplant. 2018; 1-15.    
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Diagnose This (June 17, 2019)

Article
Lymphocytic Tubulitis & Inflamation, allograft, renal pathology, Diagnose This!, Arkana Laboratories
The image shown comes from a kidney transplant patient with a rise in serum creatinine. What is the most likely diagnosis and what immunohistochemical stain would you want to rule out a less common disease sometimes seen in kidney transplants?       ​ ​   ​   ​ ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​   ​...
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