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July 22, 2021

Twitter Poll (July 21, 2021)

Cortex and Medulla, Banff criteria, renal transplant Banff classifications

 

Which of the following is not a part of the Banff adequacy criteria for the evaluation of acute rejection in a kidney biopsy?

A) At least 10 glomeruli

B) Minimum 7 glomeruli

C) At least 2 Arteries

D) Cortex and medulla

 

Answer: D) Cortex and medulla

Per the 2018 Banff reference guide for the evaluation of transplant biopsies, an adequate specimen is one that contains at least 10 glomeruli and at least 2 arteries. Additionally, the guidelines stipulate that there should be at least two cores or two separate areas of cortex in the same core in order to meet adequacy criteria. Of note, the minimally acceptable criteria, per Banff guidelines, are 7 glomeruli and one artery.