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collapsing glomerulopathy
Diagnose This!

Diagnose This (March 14, 2022)

This is the biopsy from a 41yo Middle Eastern female who received a renal transplant a few years prior and…

Twitter Poll

Twitter Poll (July 21, 2021)

Answer: B, Cortex and medulla Per the 2018 Banff reference guide for the evaluation of transplant biopsies, an adequate specimen…

hronic active antibody-mediated rejection biopsy at arkana laboratories
Diagnose This!

Diagnose This (May 25, 2021)

In an allograft biopsy, what would be your diagnosis for this combination of findings? …

Polyomavirus Nephropathy, Banff Class 3, Twitter Poll, Arkana Laboratories
Twitter Poll

Twitter Poll (July 22, 2020)

ANSWER: C, Banff Class 3 The answer is C, Polyomavirus Nephropathy, Banff Class 3. The Banff Working Group Classification was…

Twitter Poll

Twitter Poll (March 25, 2020)

ANSWER: True In 2018, Nickeleit et al. postulated a morphologic classification of polyomavirus nephropathy (PVN) based on pathologic features that…

By Vanessa Moreno, MD

KDIGO Connections

KDIGO Connections: ADPKD in Kidney Transplant Candidates

Kidney transplant donors and autosomal dominant polycystic kidney disease.

Pre-Implantation Kidney Biopsy
Art of Medicine

Art of Medicine: The Pre-Implantation Kidney Biopsy

The painting above shows normal glomeruli, tubulointerstitium, and a normal artery from a pre-implantation wedge biopsy. Pre-implantation wedge biopsies, also…

TCMR, arkana laboratories, renal pathology, kidney biopsy
Twitter Poll

Twitter Poll (June 26, 2019)

ANSWER: C Severe intimal arteritis (v2), with or without interstitial inflammation and/or tubulitis is considered acute TCMR Grade IIB based…

By Vanessa Moreno, MD

Membranous Nephropathy, renal diseases, kidney biopsy, arkana laboratories
Teaching Points

Membranous Nephropathy After Transplantation

The biopsy shows a recurrent membranous nephropathy within a transplant. Figure 1 shows “spikes” and “holes.” Figure 2 shows mild…

surgical manipulation, pushing glass, arkana laboratories
Pushing Glass

Pushing Glass (December 7, 2018)

The patient is a 50-year-old female who presents 2 days after a renal transplant with a delay in graft function…