Grace Choung, MD 박영이
@gracechoung.bsky.social
Renal pathologist @CedarsSinai
#renalpath #kidneydisease
opinions are my own
#renalpath #kidneydisease
opinions are my own
Reposted by Grace Choung, MD 박영이
So many eosinophils in this case of tubulointerstitial nephritis secondary to recent antibiotic administration. Few tiny granulomas as well. Eos seen in EM as well. #renalpath #pathsky #nephsky
November 26, 2025 at 11:51 PM
So many eosinophils in this case of tubulointerstitial nephritis secondary to recent antibiotic administration. Few tiny granulomas as well. Eos seen in EM as well. #renalpath #pathsky #nephsky
Reposted by Grace Choung, MD 박영이
Reduce variability and inconsistency in your approach to #amyloidosis diagnosis and laboratory workup! New #CAPguideline: brnw.ch/21wXMU6
#pathsky #pathology #CAPGuidelines
#pathsky #pathology #CAPGuidelines
November 24, 2025 at 9:13 PM
Reduce variability and inconsistency in your approach to #amyloidosis diagnosis and laboratory workup! New #CAPguideline: brnw.ch/21wXMU6
#pathsky #pathology #CAPGuidelines
#pathsky #pathology #CAPGuidelines
Reposted by Grace Choung, MD 박영이
Another interesting @kidneyint.bsky.social cohort study
www.kidney-international.org/article/S008...
Infection risk in kidney disease - lupus > ANCA, perhaps as ANCA is one and done (usually) whereas #lupus is never done?
Lupus > other primary and ADPKD is not surprising
#NephSky
www.kidney-international.org/article/S008...
Infection risk in kidney disease - lupus > ANCA, perhaps as ANCA is one and done (usually) whereas #lupus is never done?
Lupus > other primary and ADPKD is not surprising
#NephSky
November 23, 2025 at 1:53 PM
Another interesting @kidneyint.bsky.social cohort study
www.kidney-international.org/article/S008...
Infection risk in kidney disease - lupus > ANCA, perhaps as ANCA is one and done (usually) whereas #lupus is never done?
Lupus > other primary and ADPKD is not surprising
#NephSky
www.kidney-international.org/article/S008...
Infection risk in kidney disease - lupus > ANCA, perhaps as ANCA is one and done (usually) whereas #lupus is never done?
Lupus > other primary and ADPKD is not surprising
#NephSky
Reposted by Grace Choung, MD 박영이
#UrinarySediment from a pt with #AKI #RPGN due to suspected MPO-AAV-GN inspected with Sternheimer stain: WBC cast (bright field), broad RBC cast (bright), waxy cast (bright), and granular cast w/Ca Oxalate monohydrate crystals (oblique). #OchsnerNephrology #UrineMicroscopy
November 22, 2025 at 9:31 PM
#UrinarySediment from a pt with #AKI #RPGN due to suspected MPO-AAV-GN inspected with Sternheimer stain: WBC cast (bright field), broad RBC cast (bright), waxy cast (bright), and granular cast w/Ca Oxalate monohydrate crystals (oblique). #OchsnerNephrology #UrineMicroscopy
Reposted by Grace Choung, MD 박영이
November 16, 2025 at 11:00 AM
Reposted by Grace Choung, MD 박영이
Review by Anthony Bleyer et al:
Autosomal Dominant Tubulointerstitial Kidney Disease: A Review
bit.ly/3VgPMNS (FREE)
Autosomal Dominant Tubulointerstitial Kidney Disease: A Review
bit.ly/3VgPMNS (FREE)
November 16, 2025 at 11:00 PM
Review by Anthony Bleyer et al:
Autosomal Dominant Tubulointerstitial Kidney Disease: A Review
bit.ly/3VgPMNS (FREE)
Autosomal Dominant Tubulointerstitial Kidney Disease: A Review
bit.ly/3VgPMNS (FREE)
Reposted by Grace Choung, MD 박영이
Hilar variant of focal segmental glomerulosclerosis, with segmental sclerosis at the vascular pole with hyalinosis and adhesion (Jones silver stain)
bit.ly/49P5wQP (FREE)
#FSGS #renalpath
bit.ly/49P5wQP (FREE)
#FSGS #renalpath
November 21, 2025 at 11:00 AM
Hilar variant of focal segmental glomerulosclerosis, with segmental sclerosis at the vascular pole with hyalinosis and adhesion (Jones silver stain)
bit.ly/49P5wQP (FREE)
#FSGS #renalpath
bit.ly/49P5wQP (FREE)
#FSGS #renalpath
Reposted by Grace Choung, MD 박영이
#Quiz from October 2025:
A 16-year-old male patient presented to an ED with a 3-week history of progressive headaches, nausea, vomiting, and bilateral blurry vision. Over the past 3 days, he developed chest pain and shortness of breath.
bit.ly/47iQnEo
A 16-year-old male patient presented to an ED with a 3-week history of progressive headaches, nausea, vomiting, and bilateral blurry vision. Over the past 3 days, he developed chest pain and shortness of breath.
bit.ly/47iQnEo
November 22, 2025 at 11:00 AM
#Quiz from October 2025:
A 16-year-old male patient presented to an ED with a 3-week history of progressive headaches, nausea, vomiting, and bilateral blurry vision. Over the past 3 days, he developed chest pain and shortness of breath.
bit.ly/47iQnEo
A 16-year-old male patient presented to an ED with a 3-week history of progressive headaches, nausea, vomiting, and bilateral blurry vision. Over the past 3 days, he developed chest pain and shortness of breath.
bit.ly/47iQnEo
Reposted by Grace Choung, MD 박영이
#RenalPath: C1q nephropathy w. segmental sclerosis w. increased mesangial matrix, obliteration of capillary lumens, adhesion to Bowman capsule (right half of tuft) Open left portion of glomerulus shows mild to moderate increase in mesangial cellularity
bit.ly/3XadOLx
bit.ly/3XadOLx
November 23, 2025 at 5:00 PM
#RenalPath: C1q nephropathy w. segmental sclerosis w. increased mesangial matrix, obliteration of capillary lumens, adhesion to Bowman capsule (right half of tuft) Open left portion of glomerulus shows mild to moderate increase in mesangial cellularity
bit.ly/3XadOLx
bit.ly/3XadOLx
Reposted by Grace Choung, MD 박영이
Diagnosis unmasked. Young F with 2g proteinuria, weak +dsDNA. Membranous pattern, IF with C3 dominant staining. Pronase IF --> IgG-k. Membranous-like glomerulopathy with masked monotypic IgG-k deposits. Considered to be autoimmune; not MGRS. #renalpath #pathsky #nephsky.
November 20, 2025 at 1:01 PM
Diagnosis unmasked. Young F with 2g proteinuria, weak +dsDNA. Membranous pattern, IF with C3 dominant staining. Pronase IF --> IgG-k. Membranous-like glomerulopathy with masked monotypic IgG-k deposits. Considered to be autoimmune; not MGRS. #renalpath #pathsky #nephsky.
Reposted by Grace Choung, MD 박영이
Unfortunate but not rare IgAN presentation. Pt in their 30's, no PMHx, presented with HTN emergency, CKD, hematuria, proteinuria. Advanced IgAN with severe IFTA, focal active crescents (M1 E1 S1 T2 C1). Wish we could catch these cases earlier. #renalpath #pathsky #nephsky
November 23, 2025 at 3:50 PM
Unfortunate but not rare IgAN presentation. Pt in their 30's, no PMHx, presented with HTN emergency, CKD, hematuria, proteinuria. Advanced IgAN with severe IFTA, focal active crescents (M1 E1 S1 T2 C1). Wish we could catch these cases earlier. #renalpath #pathsky #nephsky
Reposted by Grace Choung, MD 박영이
Unusual granular casts with annular appearance. Light chain, hemoglobin, myoglobin, chromogranin casts excluded. Patient on IV vancomycin. Suspicious for vancomycin cast nephropathy. pubmed.ncbi.nlm.nih.gov/31871855/ #renalpath #pathsky #nephsky
November 21, 2025 at 3:11 PM
Unusual granular casts with annular appearance. Light chain, hemoglobin, myoglobin, chromogranin casts excluded. Patient on IV vancomycin. Suspicious for vancomycin cast nephropathy. pubmed.ncbi.nlm.nih.gov/31871855/ #renalpath #pathsky #nephsky
Reposted by Grace Choung, MD 박영이
BK nephropathy
Clues:
- Heavy but focal tubulointerstitial inflammation
- Increased plasma cells
- Viral cytopathic change
- Features of CNI toxicity ->over immunosuppression (isometric vacuolization shown here)
-SV40 IHC confirmatory
#renalpath #pathsky #nephsky
Clues:
- Heavy but focal tubulointerstitial inflammation
- Increased plasma cells
- Viral cytopathic change
- Features of CNI toxicity ->over immunosuppression (isometric vacuolization shown here)
-SV40 IHC confirmatory
#renalpath #pathsky #nephsky
November 19, 2025 at 3:35 PM
BK nephropathy
Clues:
- Heavy but focal tubulointerstitial inflammation
- Increased plasma cells
- Viral cytopathic change
- Features of CNI toxicity ->over immunosuppression (isometric vacuolization shown here)
-SV40 IHC confirmatory
#renalpath #pathsky #nephsky
Clues:
- Heavy but focal tubulointerstitial inflammation
- Increased plasma cells
- Viral cytopathic change
- Features of CNI toxicity ->over immunosuppression (isometric vacuolization shown here)
-SV40 IHC confirmatory
#renalpath #pathsky #nephsky
Reposted by Grace Choung, MD 박영이
Urine crystals in a patient with Crohn’s
Answer: www.kidney-international.org/article/S008... in @kidneyint.bsky.social
#NephSky
Answer: www.kidney-international.org/article/S008... in @kidneyint.bsky.social
#NephSky
November 19, 2025 at 5:40 PM
Urine crystals in a patient with Crohn’s
Answer: www.kidney-international.org/article/S008... in @kidneyint.bsky.social
#NephSky
Answer: www.kidney-international.org/article/S008... in @kidneyint.bsky.social
#NephSky
Reposted by Grace Choung, MD 박영이
Join RPS-GlomCon Renal Pathology Webinar Series
Update on CKDu/CINAC
Speaker: Cynthia Nast, MD
Date: November 30, 2025
Webinar info: renalpathsoc.org/event-6113942
#renalpath #PathTwitter
@glomcon.org
Update on CKDu/CINAC
Speaker: Cynthia Nast, MD
Date: November 30, 2025
Webinar info: renalpathsoc.org/event-6113942
#renalpath #PathTwitter
@glomcon.org
November 18, 2025 at 1:45 AM
Join RPS-GlomCon Renal Pathology Webinar Series
Update on CKDu/CINAC
Speaker: Cynthia Nast, MD
Date: November 30, 2025
Webinar info: renalpathsoc.org/event-6113942
#renalpath #PathTwitter
@glomcon.org
Update on CKDu/CINAC
Speaker: Cynthia Nast, MD
Date: November 30, 2025
Webinar info: renalpathsoc.org/event-6113942
#renalpath #PathTwitter
@glomcon.org
Reposted by Grace Choung, MD 박영이
Arteriole with features of a old recanalized thombus in a transplant kidney biopsy. Multiple slit like vascular spaces within the fibrotic lumen. Not a lesion I see often. Pt had clinically diagnosed TMA a few months prior. #renalpath #pathsky #nephsky
November 18, 2025 at 6:29 PM
Arteriole with features of a old recanalized thombus in a transplant kidney biopsy. Multiple slit like vascular spaces within the fibrotic lumen. Not a lesion I see often. Pt had clinically diagnosed TMA a few months prior. #renalpath #pathsky #nephsky
Reposted by Grace Choung, MD 박영이
NELL-1 IHC can also be tricky to interpret as there is significant podocyte cytoplasmic staining in the negative control. Must show granular capillary wall deposits which match deposits by IF and EM. #renalpath #pathsky #nephsky
November 17, 2025 at 8:06 PM
NELL-1 IHC can also be tricky to interpret as there is significant podocyte cytoplasmic staining in the negative control. Must show granular capillary wall deposits which match deposits by IF and EM. #renalpath #pathsky #nephsky
Reposted by Grace Choung, MD 박영이
Illustrative example of a segmental membranous nephropathy pattern (segmental granular IgG staining) which is often seen with NELL-1+ (IHC) MN as in this case. Deposits present in only some loops by EM. #renalpath #pathsky #nephsky
November 17, 2025 at 8:03 PM
Illustrative example of a segmental membranous nephropathy pattern (segmental granular IgG staining) which is often seen with NELL-1+ (IHC) MN as in this case. Deposits present in only some loops by EM. #renalpath #pathsky #nephsky
Reposted by Grace Choung, MD 박영이
Interpreting Metabolomics and Proteomics in Kidney Disease: A Practical Guide by Insa M. Schmidt and Eugene P. Rhee
bit.ly/4ooxkQ6
bit.ly/4ooxkQ6
November 6, 2025 at 5:02 PM
Interpreting Metabolomics and Proteomics in Kidney Disease: A Practical Guide by Insa M. Schmidt and Eugene P. Rhee
bit.ly/4ooxkQ6
bit.ly/4ooxkQ6
Reposted by Grace Choung, MD 박영이
AJKD Atlas of Renal Pathology: Crystalglobulin-Induced Nephropathy
bit.ly/41jvO7T (FREE)
#RenalPath
Image: Large bright eosinophilic crystals within glomerular capillaries (arrow, Jones silver stain)
bit.ly/41jvO7T (FREE)
#RenalPath
Image: Large bright eosinophilic crystals within glomerular capillaries (arrow, Jones silver stain)
November 11, 2025 at 11:00 PM
AJKD Atlas of Renal Pathology: Crystalglobulin-Induced Nephropathy
bit.ly/41jvO7T (FREE)
#RenalPath
Image: Large bright eosinophilic crystals within glomerular capillaries (arrow, Jones silver stain)
bit.ly/41jvO7T (FREE)
#RenalPath
Image: Large bright eosinophilic crystals within glomerular capillaries (arrow, Jones silver stain)
Reposted by Grace Choung, MD 박영이
RPS International Renal Pathology Conference abstract deadline extended to November 15th
All information for registration is available at the RPS-Website: renalpathsoc.org/6thIRPC
Chair 6th IRPC
Carmen Avila-Casado MD, PhD
#renalpath #nephsky #pathsky #nephrology
All information for registration is available at the RPS-Website: renalpathsoc.org/6thIRPC
Chair 6th IRPC
Carmen Avila-Casado MD, PhD
#renalpath #nephsky #pathsky #nephrology
November 12, 2025 at 12:16 AM
RPS International Renal Pathology Conference abstract deadline extended to November 15th
All information for registration is available at the RPS-Website: renalpathsoc.org/6thIRPC
Chair 6th IRPC
Carmen Avila-Casado MD, PhD
#renalpath #nephsky #pathsky #nephrology
All information for registration is available at the RPS-Website: renalpathsoc.org/6thIRPC
Chair 6th IRPC
Carmen Avila-Casado MD, PhD
#renalpath #nephsky #pathsky #nephrology
Reposted by Grace Choung, MD 박영이
Thanks @amyaimei.bsky.social for giving an excuse to share some #UrinarySediment pics. See below for context 👇🏼
October 30, 2025 at 4:20 AM
Thanks @amyaimei.bsky.social for giving an excuse to share some #UrinarySediment pics. See below for context 👇🏼
Reposted by Grace Choung, MD 박영이
Great start of ‚Hot topics in lupus nephritis’ session chaired by @saynanorouzi.bsky.social and Juan M. Mejia-Vilet, with an excellent lecture of @kronbichlerlab.bsky.social on 25’ treatment targets #KidneyWk @asnkidney.bsky.social
November 7, 2025 at 11:44 PM
Great start of ‚Hot topics in lupus nephritis’ session chaired by @saynanorouzi.bsky.social and Juan M. Mejia-Vilet, with an excellent lecture of @kronbichlerlab.bsky.social on 25’ treatment targets #KidneyWk @asnkidney.bsky.social
Reposted by Grace Choung, MD 박영이
Cellular variant of focal segmental glomerulosclerosis, with endocapillary hypercellularity with foam cells and mononuclear cells (top; Jones silver stain)"
bit.ly/4nNJdy2 (FREE)
#renalpath #FSGS
bit.ly/4nNJdy2 (FREE)
#renalpath #FSGS
November 9, 2025 at 11:00 AM
Cellular variant of focal segmental glomerulosclerosis, with endocapillary hypercellularity with foam cells and mononuclear cells (top; Jones silver stain)"
bit.ly/4nNJdy2 (FREE)
#renalpath #FSGS
bit.ly/4nNJdy2 (FREE)
#renalpath #FSGS
Reposted by Grace Choung, MD 박영이
Clinicopathological spectrum and treatment outcomes of cryofibrinogen-associated nephropathies
#nephsky #nephrology
www.kireports.org/article/S246...
#nephsky #nephrology
www.kireports.org/article/S246...
Clinicopathological spectrum and treatment outcomes of cryofibrinogen-associated nephropathies
Cryofibrinogen (CF)-associated nephropathy (CFN) is a very rare disease. Only few
data are available about the clinicopathological presentation and treatment outcomes.
www.kireports.org
November 6, 2025 at 2:40 AM
Clinicopathological spectrum and treatment outcomes of cryofibrinogen-associated nephropathies
#nephsky #nephrology
www.kireports.org/article/S246...
#nephsky #nephrology
www.kireports.org/article/S246...