Jay R. Seltzer, MD
@jrseltzer.bsky.social
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📥 111
📝 120
Medical Director Urine Microscopy Laboratory Missouri Baptist Medical Center St. Louis Missouri USA
Mixed cellular casts - brightfield with SM stain -
#UrinarySediment
#UrineMicroscopy
4 days ago
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Bilirubin crystals under polarized light
#UrineMicroscopy
#UrinarySediment
5 days ago
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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
19 days ago
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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
about 2 months ago
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RBC cast - brightfield, unstained - in preserved urine sample from a case of GPA, stored at room temperature for 2.5 years!
#UrineMicroscopy
#UrinarySediment
about 2 months ago
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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
about 2 months ago
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Calcium oxalate dihydrate crystals - brightfield and darkfield, unstained - from pt of
@nephrothaniel.bsky.social
-
#UrineMicroscopy
#UrinarySediment
about 2 months ago
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RBC cast - brightfield, unstained - from patient with hydralazine-induced vasculitis
#UrineMicroscopy
#UrinarySediment
3 months ago
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RBC's within waxy cast - brightfield and darkfield, unstained - from patient with hydralazine-induced vasculitis
#UrineMicroscopy
#UrinarySediment
3 months ago
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RBC cast - brightfield, with SM stain - from patient with hydralazine-induced vasculitis
#UrineMicroscopy
#UrinarySediment
3 months ago
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WBC cast - brightfield and darkfield, with SM stain - from patient with hydralazine-induced vasculitis
#UrineMicroscopy
#UrinarySediment
3 months ago
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Acanthocyte - phase contrast (original mag x400) - from patient with hydralazine-induced vasculitis
#UrineMicroscopy
#UrinarySediment
3 months ago
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RBC cast - brightfield with SM stain - from patient with MSSA bacteremia and osteomyelitis -
#UrineMicroscopy
#UrinarySediment
6 months ago
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RBC cast - brightfield with SM stain - from new case of MPA -
#UrineMicroscopy
#UrinarySediment
7 months ago
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Very long RBC cast - darkfield with SM stain - from new case of MPA -
#UrineMicroscopy
#UrinarySediment
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7 months ago
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RBC casts - brightfield with SM stain - from new case of MPA -
#UrineMicroscopy
#UrinarySediment
7 months ago
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Acanthocyte - darkfield, unstained - cropped from original x1000 - from case of suspected hydralazine-induced vasculitis -
#UrineMicroscopy
#UrinarySediment
7 months ago
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RBC casts - brightfield with SM stain - from case of suspected hydralazine-induced vasculitis -
#UrineMicroscopy
#UrinarySediment
7 months ago
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Vacuolar cast (which probably also contains some RBC's) - brightfield with SM stain - from patient with AKI and suspected hydralazine-induced vasculitis
#UrineMicroscopy
#UrinarySediment
7 months ago
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reposted by
Jay R. Seltzer, MD
Juan Carlos Q Vélez, MD
8 months ago
Interested in learning more about the art of microscopic examination of the urinary sediment and its clinical applications?
@jrseltzer.bsky.social
@swethakanduri.bsky.social
and I will be running a Hands-On Workshop at KidneyCon this year. Come join us!
@kidneycon.bsky.social
May 1-3. Register ASAP
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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...
8 months ago
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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
9 months ago
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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
9 months ago
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WBC cast - brightfield with SM stain - from patient with recurrent UTI's s/p abx rx over 3 weeks -
#UrineMicroscopy
#UrinarySediment
10 months ago
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RBC cast - brightfield, unstained - from patient with IRGN -
#UrineMicroscopy
#UrinarySediment
10 months ago
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RBC's in a waxy cast - brightfield, unstained - from patient with IRGN -
#UrineMicroscopy
#UrinarySediment
10 months ago
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Registration is open for KIDNEYcon 2025 May 1-3 Little Rock, AR
kidneycon.org/registration
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Registration — KIDNEYcon
Registration
https://kidneycon.org/registration
10 months ago
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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
10 months ago
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RBC cast - brightfield, unstained -
#UrinarySediment
#UrineMicroscopy
10 months ago
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RBC cast - brightfield with SM stain - from pt with IRGN -
#UrinarySediment
#UrineMicroscopy
10 months ago
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RBC cast - darkfield with SM stain -
#UrinarySediment
#UrineMicroscopy
10 months ago
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Mixed cellular cast - brightfield with SM stain - from patient with IRGN -
#UrinarySediment
#UrineMicroscopy
10 months ago
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Mixed cellular cast - brightfield with SM stain - from patient with suspected IRGN -
#UrineMicroscopy
#UrinarySediment
10 months ago
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RBC cast - brightfield with SM stain (the crystals are SM stain precipitate) - from patient with suspected IRGN -
#UrineMicroscopy
#UrinarySediment
10 months ago
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Degenerating RBC's in a cast - note the presence of Heinz bodies (small, dense clumps of denatured hemoglobin, along the cell membranes) - brightfield with SM stain - from patient with AKI and chronic Staph. osteomyelitis -
#UrinarySediment
#UrineMicroscopy
10 months ago
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Coiled RBC cast with fibrinous matrix - brightfield with SM stain - from patient with AKI and chronic Staph. osteomyelitis -
#UrinarySediment
#UrineMicroscopy
10 months ago
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Coiled RBC cast with fibrinous matrix - brightfield with SM stain - from patient with AKI and chronic Staph. osteomyelitis -
#UrinarySediment
#UrineMicroscopy
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10 months ago
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Acanthocyte - phase contrast (orig mag x400) - from patient with AKI and chronic Staph. osteomyelitis -
#UrinarySediment
#UrineMicroscopy
10 months ago
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Broad RBC cast fragment - brightfield with SM stain - from patient with MPA -
#UrinarySediment
#UrineMicroscopy
10 months ago
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RBC cast and mixed cellular cast - brightfield with SM stain - from patient with AKI and chronic Staph. osteomyelitis -
#UrinarySediment
#UrineMicroscopy
10 months ago
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x.com/jrseltzer/st...
Really long waxy cast containing RBC's and fibrin-like threads... brightfield with SM stain -
#UrineMicroscopy
#Urinarysediment
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x.com
https://x.com/jrseltzer/status/1875990834115743767
11 months ago
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Grouping of "glitter cells" (viable WBC's with cytoplasmic granule motion) - brightfield, unstained -
#UrineMicroscopy
#Urinarysediment
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11 months ago
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Very long lipid cast - brightfield with SM stain -
#UrineMicroscopy
#Urinarysediment
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11 months ago
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Close up view of dysmorphic RBC's including acanthocytes - under darkfield/oblique illumination - from 2024 case of MPA -
#UrineMicroscopy
#UrinarySediment
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11 months ago
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Dysmorphic RBC's including acanthocytes - under darkfield/oblique illumination - from 2024 case of MPA -
#UrineMicroscopy
#UrinarySediment
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11 months ago
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Large mixed cellular cast with prominent fibrin matrix - brightfield with SM stain - from 2023 case of MPA -
#UrinarySediment
#UrineMicroscopy
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11 months ago
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Acanthocytes - brightfield, unstained - x1000 -
#UrineMicroscopy
#UrinarySediment
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11 months ago
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Flowing urinary uric acid crystals, under polarized light -
#UrineMicroscopy
#UrinarySediment
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11 months ago
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Acanthocyte - brightfield x1000, unstained -
#UrineMicroscopy
#UrinarySediment
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11 months ago
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Cluster of "glitter cells" - phase contrast -
#UrineMicroscopy
#UrinarySediment
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11 months ago
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