Jay R. Seltzer, MD
@jrseltzer.bsky.social
Medical Director
Urine Microscopy Laboratory
Missouri Baptist Medical Center
St. Louis Missouri USA
Urine Microscopy Laboratory
Missouri Baptist Medical Center
St. Louis Missouri USA
30 y/o man, with hx GPA 15 years ago, presents with vasculitic rash, pulm infiltrates, and AKI with rapid worsening. DAH on bronch. #UrineMicrosopy showed RBC cast, WBC cast, and tubular cell cast - brightfield with SM stain. #UrinarySediment
November 6, 2025 at 12:10 PM
30 y/o man, with hx GPA 15 years ago, presents with vasculitic rash, pulm infiltrates, and AKI with rapid worsening. DAH on bronch. #UrineMicrosopy showed RBC cast, WBC cast, and tubular cell cast - brightfield with SM stain. #UrinarySediment
Mixed cellular cast (RBC’s and WBC’s, and a few tubular epithelial cells) - note the WBC’s are clearly indicated by Prescott-Brody stain whereas the tubular cells are not - in preserved urine sample from a case of GPA, stored at room temperature for 2.5 years! #UrineMicroscopy #UrinarySediment
October 11, 2025 at 5:15 PM
Mixed cellular cast (RBC’s and WBC’s, and a few tubular epithelial cells) - note the WBC’s are clearly indicated by Prescott-Brody stain whereas the tubular cells are not - in preserved urine sample from a case of GPA, stored at room temperature for 2.5 years! #UrineMicroscopy #UrinarySediment
RBC cast - brightfield, unstained - in preserved urine sample from a case of GPA, stored at room temperature for 2.5 years! #UrineMicroscopy #UrinarySediment
October 11, 2025 at 5:15 PM
RBC cast - brightfield, unstained - in preserved urine sample from a case of GPA, stored at room temperature for 2.5 years! #UrineMicroscopy #UrinarySediment
Oval fat body and acanthocyte - brightfield with SM stain - in preserved urine sample from a case of GPA, stored at room temperature for 2.5 years! #UrineMicroscopy #UrinarySediment
October 10, 2025 at 12:55 AM
Oval fat body and acanthocyte - brightfield with SM stain - in preserved urine sample from a case of GPA, stored at room temperature for 2.5 years! #UrineMicroscopy #UrinarySediment
Calcium oxalate dihydrate crystals - brightfield and darkfield, unstained - from pt of @nephrothaniel.bsky.social - #UrineMicroscopy #UrinarySediment
October 2, 2025 at 1:54 AM
Calcium oxalate dihydrate crystals - brightfield and darkfield, unstained - from pt of @nephrothaniel.bsky.social - #UrineMicroscopy #UrinarySediment
RBC cast - brightfield, unstained - from patient with hydralazine-induced vasculitis #UrineMicroscopy #UrinarySediment
August 16, 2025 at 1:55 AM
RBC cast - brightfield, unstained - from patient with hydralazine-induced vasculitis #UrineMicroscopy #UrinarySediment
RBC's within waxy cast - brightfield and darkfield, unstained - from patient with hydralazine-induced vasculitis #UrineMicroscopy #UrinarySediment
August 16, 2025 at 1:55 AM
RBC's within waxy cast - brightfield and darkfield, unstained - from patient with hydralazine-induced vasculitis #UrineMicroscopy #UrinarySediment
RBC cast - brightfield, with SM stain - from patient with hydralazine-induced vasculitis #UrineMicroscopy #UrinarySediment
August 16, 2025 at 1:54 AM
RBC cast - brightfield, with SM stain - from patient with hydralazine-induced vasculitis #UrineMicroscopy #UrinarySediment
WBC cast - brightfield and darkfield, with SM stain - from patient with hydralazine-induced vasculitis #UrineMicroscopy #UrinarySediment
August 16, 2025 at 1:53 AM
WBC cast - brightfield and darkfield, with SM stain - from patient with hydralazine-induced vasculitis #UrineMicroscopy #UrinarySediment
Acanthocyte - phase contrast (original mag x400) - from patient with hydralazine-induced vasculitis #UrineMicroscopy #UrinarySediment
August 16, 2025 at 1:53 AM
Acanthocyte - phase contrast (original mag x400) - from patient with hydralazine-induced vasculitis #UrineMicroscopy #UrinarySediment
RBC cast - brightfield with SM stain - from patient with MSSA bacteremia and osteomyelitis - #UrineMicroscopy #UrinarySediment
June 3, 2025 at 3:21 AM
RBC cast - brightfield with SM stain - from patient with MSSA bacteremia and osteomyelitis - #UrineMicroscopy #UrinarySediment
RBC cast - brightfield with SM stain - from new case of MPA - #UrineMicroscopy #UrinarySediment
May 13, 2025 at 3:04 AM
RBC cast - brightfield with SM stain - from new case of MPA - #UrineMicroscopy #UrinarySediment
Very long RBC cast - darkfield with SM stain - from new case of MPA - #UrineMicroscopy #UrinarySediment
May 11, 2025 at 2:32 AM
Very long RBC cast - darkfield with SM stain - from new case of MPA - #UrineMicroscopy #UrinarySediment
RBC casts - brightfield with SM stain - from new case of MPA - #UrineMicroscopy #UrinarySediment
May 10, 2025 at 2:37 AM
RBC casts - brightfield with SM stain - from new case of MPA - #UrineMicroscopy #UrinarySediment
Acanthocyte - darkfield, unstained - cropped from original x1000 - from case of suspected hydralazine-induced vasculitis - #UrineMicroscopy #UrinarySediment
April 30, 2025 at 2:17 AM
Acanthocyte - darkfield, unstained - cropped from original x1000 - from case of suspected hydralazine-induced vasculitis - #UrineMicroscopy #UrinarySediment
RBC casts - brightfield with SM stain - from case of suspected hydralazine-induced vasculitis - #UrineMicroscopy #UrinarySediment
April 30, 2025 at 2:17 AM
RBC casts - brightfield with SM stain - from case of suspected hydralazine-induced vasculitis - #UrineMicroscopy #UrinarySediment
Vacuolar cast (which probably also contains some RBC's) - brightfield with SM stain - from patient with AKI and suspected hydralazine-induced vasculitis #UrineMicroscopy #UrinarySediment
April 30, 2025 at 2:17 AM
Vacuolar cast (which probably also contains some RBC's) - brightfield with SM stain - from patient with AKI and suspected hydralazine-induced vasculitis #UrineMicroscopy #UrinarySediment
New #UrinarySediment and #UrineMicroscopy case studies in @akdhjournal
Use the link below but be sure to view as a pdf - the online version is not formatted correctly
kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...
Use the link below but be sure to view as a pdf - the online version is not formatted correctly
kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...
April 1, 2025 at 12:02 AM
New #UrinarySediment and #UrineMicroscopy case studies in @akdhjournal
Use the link below but be sure to view as a pdf - the online version is not formatted correctly
kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...
Use the link below but be sure to view as a pdf - the online version is not formatted correctly
kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...
Young male presented with DVT and PE. Found to have UPC 8 gm/gm, serum albumin 2.2, and creatinine 2.3 - #UrineMicroscopy showed this mixed cellular cast containing RBC's, tubular epithelial cells, and WBC's - brightfield with SM stain - #UrinarySediment
February 27, 2025 at 2:11 AM
Young male presented with DVT and PE. Found to have UPC 8 gm/gm, serum albumin 2.2, and creatinine 2.3 - #UrineMicroscopy showed this mixed cellular cast containing RBC's, tubular epithelial cells, and WBC's - brightfield with SM stain - #UrinarySediment
Vacation's over and I'm back in the lab....
Young male presented with DVT and PE. Found to have UPC 8 gm/gm and serum albumin 2.2 and creatinine 2.3 - #UrineMicroscopy showed RBC casts with fibrinous matrix as well as a few lipid casts - brightfield with SM stain - #UrinarySediment
Young male presented with DVT and PE. Found to have UPC 8 gm/gm and serum albumin 2.2 and creatinine 2.3 - #UrineMicroscopy showed RBC casts with fibrinous matrix as well as a few lipid casts - brightfield with SM stain - #UrinarySediment
February 26, 2025 at 2:36 AM
Vacation's over and I'm back in the lab....
Young male presented with DVT and PE. Found to have UPC 8 gm/gm and serum albumin 2.2 and creatinine 2.3 - #UrineMicroscopy showed RBC casts with fibrinous matrix as well as a few lipid casts - brightfield with SM stain - #UrinarySediment
Young male presented with DVT and PE. Found to have UPC 8 gm/gm and serum albumin 2.2 and creatinine 2.3 - #UrineMicroscopy showed RBC casts with fibrinous matrix as well as a few lipid casts - brightfield with SM stain - #UrinarySediment
WBC cast - brightfield with SM stain - from patient with recurrent UTI's s/p abx rx over 3 weeks - #UrineMicroscopy #UrinarySediment
January 30, 2025 at 9:00 PM
WBC cast - brightfield with SM stain - from patient with recurrent UTI's s/p abx rx over 3 weeks - #UrineMicroscopy #UrinarySediment
RBC cast - brightfield, unstained - from patient with IRGN - #UrineMicroscopy #UrinarySediment
January 30, 2025 at 8:58 PM
RBC cast - brightfield, unstained - from patient with IRGN - #UrineMicroscopy #UrinarySediment
RBC's in a waxy cast - brightfield, unstained - from patient with IRGN - #UrineMicroscopy #UrinarySediment
January 30, 2025 at 8:57 PM
RBC's in a waxy cast - brightfield, unstained - from patient with IRGN - #UrineMicroscopy #UrinarySediment
RBC cast with fibrinous matrix - brightfield with SM stain - from patient with AKI and chronic Staph. osteomyelitis - biopsy showed an IgA dominant IRGN pattern #UrinarySediment #UrineMicroscopy
January 25, 2025 at 8:16 PM
RBC cast with fibrinous matrix - brightfield with SM stain - from patient with AKI and chronic Staph. osteomyelitis - biopsy showed an IgA dominant IRGN pattern #UrinarySediment #UrineMicroscopy
RBC cast - brightfield, unstained - #UrinarySediment #UrineMicroscopy
January 23, 2025 at 3:27 AM
RBC cast - brightfield, unstained - #UrinarySediment #UrineMicroscopy