What is your diagnosis? #DiagnoseThis #nephtwitter #pathtwitter #renal #kidneypath

Here is today’s #eyeSCANdy! Glomerulus obliterated by a fibrous crescent. Photo courtesy of Dr. Stephen Bonsib. #renal #pathology #kidneypath

A sample from the pathology teaching slide set on Lupus Nephritis, jointly prepared by Arkana Laboratories and @goKDIGO. http://KDIGO.org/guidelines/gd/ #KDIGO #pathology #renal #kidneypath

How long have we known about glomeruli? Today’s teaching point is offered in honor of Marcello Malpighi (1628-1694), the Italian anatomist who is credited with having published the world’s first accurate description of glomerular structure (Bologna, Italy 1666). We learn from those who teach us!

What is your diagnosis? #DiagnoseThis #nephtwitter #pathtwitter #renal #kidneypath

A sample from the pathology teaching slide set on Lupus Nephritis, jointly prepared by Arkana Laboratories and @goKDIGO. http://KDIGO.org/guidelines/gd/ #KDIGO #pathology #renal #kidneypath

Here is today’s #eyeSCANdy! Acellular scanning EM showing a glomerulus in cross-section though the macular densa and showing the origin of the proximal tubule from Bowman’s capsule. Photo courtesy of Dr. Stephen Bonsib. #renal #pathology #kidneypath

Appreciate the opportunity to speak on variants of uncertain significance (VUS) in kidney genetic testing @kidneycon.bsky.social 2026 in Little Rock. Thank you to @uamshealth.bsky.social, @arkanalabs.bsky.social, Drs. John Arthur and Shree Sharma.

We recently sat down with Dr. Irfan Agha, a nephrologist specializing in glomerulonephritis with the Dallas Renal Group, to speak about his unique approach to patient care for glomerulonephritis patients.  Listen to the conversation here: https://youtu.be/suW8u6TOkVY #Renal #KidneyPath

One of the many patterns of tubular atrophy in the kidney is the aptly named “thyroidization” pattern because of its resemblance to normal thyroid gland follicles.  #TeachingPoints #kidneypath #renal #pathology

What is your diagnosis? #DiagnoseThis #nephtwitter #pathtwitter #renal #kidneypath

We recently sat down with Dr. Irfan Agha, a nephrologist specializing in glomerulonephritis with the Dallas Renal Group, to speak about his unique approach to patient care for glomerulonephritis patients.  Listen to the conversation here: https://youtu.be/suW8u6TOkVY #Renal #KidneyPath

A case of AA amyloidosis. This biopsy is from a homeless patient with numerous abscesses of the arms and legs, consistent with infected skin popping wounds due to IV drug use.   #nephsky #pathsky #renal #kidneypath

A sample from the pathology teaching slide set on Minimal Change Disease in Adults: Treatment of Relapse, jointly prepared by Arkana Laboratories and @goKDIGO. http://KDIGO.org/guidelines/gd/ #KDIGO #pathology #renal #kidneypath

Here is today’s #eyeSCANdy! Lumen of a vein showing the ostia of several entering venules. Photo courtesy of Dr. Stephen Bonsib. #renal #pathology #kidneypath

What is this finding and what is the most likely etiology? #DiagnoseThis #nephtwitter #pathtwitter #renal #kidneypath

We recently had the privilege of sitting down for a conversation with Dr. Irfan Agha, a nephrologist specializing in glomerulonephritis with the Dallas Renal Group, to speak about his unique approach to patient care for glomerulonephritis patients. #IgANDay #renal Listen to the conversation below:

A sample from the pathology teaching slide set on IgA Nephropathy, jointly prepared by Arkana Laboratories and @goKDIGO. http://KDIGO.org/guidelines/gd/ #KDIGO #pathology #renal #kidneypath #igan #iganephropathy #iganawareness #iganday

In honor of #IgANDay, we wanted to share this painting by @glombandit.bsky.social#IgANDay, It shows glomeruli with mesangial hypercellularity, endocapillary hypercellularity, and crescent formation. These findings can be seen in IgA nephropathy, and other active glomerulonephritides.

Figure 1 shows a renal biopsy from a 29-year-old man with no significant past medical history, who was found to have microscopic hematuria and non-nephrotic range proteinuria.  #igan #iganawareness #iganday #iganephropathy #TeachingPoints #kidneypath #renal #pathology

What is this finding and what does it mean? #DiagnoseThis #nephsky #pathsky #renal #kidneypath

Here is today’s #eyeSCANdy! Acellular scanning EM showing a glomerulus with ischemic collapse. Photo courtesy of Dr. Stephen Bonsib. #renal #pathology #kidneypath

A sample from the pathology teaching slide set on Minimal Change Disease in Adults, jointly prepared by Arkana Laboratories and @goKDIGO. http://KDIGO.org/guidelines/gd/ #KDIGO #pathology #renal #kidneypath

Arkana was built around the idea that the longest week of someone’s life is the time in between getting a biopsy and getting the results of the biopsy. From day one, we have put patients at the center of everything we do. 25 years later, our patients are still keeping us going. #Arkana25 #TeamArkan

An immunofluorescence panel for IgA, IgG, IgM, C3, C1q, kappa and lambda was negative. #DiagnoseThis #nephtwitter #pathtwitter #renal #kidneypath

(1/2) Rare intraluminal fibrin aggregates (PAS stain), along with background glomerular congestion (H&E stain).  #renalpathology #renal #pathsky #nephsky #underthescope

Largest case series of kidney biopsies in diabetes to report the frequency and association of non-diabetic kidney disease (very high - selection bias as the authors do note) - from the Arkana folks www.kidney-international.org/article/S008...

Excited for Dr. Jamie Singh and @nephrosharma.bsky.social to take part in #NKFClinicals! Join them in learning, sharing, and advancing kidney care. See you in New Orleans — register today: www.kidney.org/spring-clini...

Here is today’s #eyeSCANdy! Scanning EM of normal papillary tip showing an ostia of a duct of Bellini and surrounding urothelial cells. Photo courtesy of Dr. Stephen Bonsib. #renal #pathology #kidneypath

A sample from the pathology teaching slide set on IgA Nephropathy, jointly prepared by Arkana Laboratories and @goKDIGO. http://KDIGO.org/guidelines/gd/ #KDIGO #pathology #renal #kidneypath

Serine protease HTRA1 is a common autoantigen in membranous nephropathy in patients of 80 years and older doi.org/10.1016/j.kint.2026.02.036 #MedSky #NephSky #kidneybiopsy #pathsky #renalpath #kidneypath @uofuhealth.bsky.social @arkanalabs.bsky.social @meharrymed.bsky.social

1/ This biopsy is taken from a patient with HIV/AIDS who presented with an elevated serum creatinine and nephrotic range proteinuria.  #TeachingPoints #kidneypath #renal #pathology

We're excited to share a new research publication featuring @glombandit.bsky.social, Dr. Frank Boyd, and Dr. Patrick Walker titled "Clinical and Histologic Predictors of Non-Diabetic Kidney Disease in Patients with Diabetes Mellitus.” Read the study:

What would be your leading Dx and subtype based on the Congo red image above showing deposition predominately in the cortex of a Hispanic patient? #DiagnoseThis #nephtwitter #pathtwitter #renal #kidneypath

(1/2) A case of fibronectin glomerulopathy with characteristic PAS+, non argyrophilic deposits massively expanding the mesangium and subendothelium.

Here is today’s #eyeSCANdy! Red blood cells, some dysmorphic, within a collecting duct. Photo courtesy of Dr. Stephen Bonsib. #renal #pathology #kidneypath

A sample from the pathology teaching slide set on IgA Nephropathy, jointly prepared by Arkana Laboratories and @goKDIGO. http://KDIGO.org/guidelines/gd/ #KDIGO #pathology #renal #kidneypath

What considerations should be included in your differential diagnosis given the provided histologic finding? #DiagnoseThis #nephtwitter #pathtwitter #renal #kidneypath

Here is today’s #eyeSCANdy! Dysmorphic red blood cells from the urine of a patient with crescentic glomerulonephritis. Photo courtesy of Dr. Stephen Bonsib. #renal #pathology #kidneypath

A sample from the pathology teaching slide set on Membranous Nephropathy Research Recommendation, jointly prepared by Arkana Laboratories and @goKDIGO. http://KDIGO.org/guidelines/gd/ #KDIGO #pathology #renal #kidneypath

This renal biopsy illustrates severe chronic kidney injury and its effects on all major compartments of the cortex: most glomeruli are globally sclerotic, the atrophic tubules are widely spaced, the interstitium is fibrotic, and the arterial walls show intimal fibrosis.  #TeachingPoints #pathology

What’s your diagnosis? #DiagnoseThis #nephtwitter #pathtwitter #renal #kidneypath

Here is today’s #eyeSCANdy! Urine – calcium oxalate crystals Photo courtesy of Dr. Stephen Bonsib. #renal #pathology #kidneypath

A sample from the pathology teaching slide set on IgA Nephropathy, jointly prepared by Arkana Laboratories and @goKDIGO. http://KDIGO.org/guidelines/gd/ #KDIGO #pathology #renal #kidneypath

Immunotactoid glomerulopathy is one of many glomerular diseases characterized by organized deposits.  #TeachingPoints #kidneypath #renal #pathology

This is the C4d immunofluorescence from a 5y post-transplant biopsy of an AA female who had ESRD due to lupus nephritis. What is your diagnosis? #DiagnoseThis #nephsky #pathsky #renal #kidneypath

We're proud to share a new publication with @aaronstorey.bsky.social, Dr. Patrick Walker, Dr. Chris Larsen, and @glombandit.bsky.social, titled "Serine Protease HTRA1 is a Common Autoantigen in Membranous Nephropathy in Patients of 80 Years and Older."

We're excited to share a new research publication from Dr. Jon Wilson, @glombandit.bsky.social, Dr. Randy Haun, and Dr. Chris Larsen titled "Framework for Apolipoprotein 1-Mediated Kidney Disease Classification." Read here: https://www.kireports.org/article/S2468-0249(26)02639-2/fulltext #nephsky

A sample from the pathology teaching slide set on Membranous Glomerulopathy: PLA2R Testing and When to Consider Kidney Biopsy, jointly prepared by Arkana Laboratories and @goKDIGO. http://KDIGO.org/guidelines/gd/ #KDIGO #pathology #renal #kidneypath

Here is today’s #eyeSCANdy! Scanning EM of a proteinuric glomerulus with capillary loop showing widening and partial loss of interdigitating podocyte foot processes. Photo courtesy of Dr. Stephen Bonsib. #renal #pathology #kidneypath