WBC cast with numerous "glitter cells" - phase contrast - from patient with suspected acute interstitial nephritis - #UrineMicroscopy #UrinarySediment

Mixed cellular casts - brightfield with SM stain - #UrinarySediment #UrineMicroscopy

Bilirubin crystals under polarized light #UrineMicroscopy #UrinarySediment

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

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

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

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

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

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

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

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

Vacuolar cast (which probably also contains some RBC's) - brightfield with SM stain - from patient with AKI and suspected hydralazine-induced vasculitis #UrineMicroscopy #UrinarySediment

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

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...

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

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

RBC's in a waxy cast - brightfield, unstained - from patient with IRGN - #UrineMicroscopy #UrinarySediment

Registration is open for KIDNEYcon 2025 May 1-3 Little Rock, AR kidneycon.org/registration

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

RBC cast - brightfield with SM stain - from pt with IRGN - #UrinarySediment #UrineMicroscopy

RBC cast - darkfield with SM stain - #UrinarySediment #UrineMicroscopy

Mixed cellular cast - brightfield with SM stain - from patient with IRGN - #UrinarySediment #UrineMicroscopy

Mixed cellular cast - brightfield with SM stain - from patient with suspected IRGN - #UrineMicroscopy #UrinarySediment

RBC cast - brightfield with SM stain (the crystals are SM stain precipitate) - from patient with suspected IRGN - #UrineMicroscopy #UrinarySediment

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

Coiled RBC cast with fibrinous matrix - brightfield with SM stain - from patient with AKI and chronic Staph. osteomyelitis - #UrinarySediment #UrineMicroscopy

Coiled RBC cast with fibrinous matrix - brightfield with SM stain - from patient with AKI and chronic Staph. osteomyelitis - #UrinarySediment #UrineMicroscopy

Acanthocyte - phase contrast (orig mag x400) - from patient with AKI and chronic Staph. osteomyelitis - #UrinarySediment #UrineMicroscopy

Broad RBC cast fragment - brightfield with SM stain - from patient with MPA - #UrinarySediment #UrineMicroscopy

RBC cast and mixed cellular cast - brightfield with SM stain - from patient with AKI and chronic Staph. osteomyelitis - #UrinarySediment #UrineMicroscopy

x.com/jrseltzer/st... Really long waxy cast containing RBC's and fibrin-like threads... brightfield with SM stain - #UrineMicroscopy #Urinarysediment

Grouping of "glitter cells" (viable WBC's with cytoplasmic granule motion) - brightfield, unstained - #UrineMicroscopy #Urinarysediment

Very long lipid cast - brightfield with SM stain - #UrineMicroscopy #Urinarysediment

Close up view of dysmorphic RBC's including acanthocytes - under darkfield/oblique illumination - from 2024 case of MPA - #UrineMicroscopy #UrinarySediment

Dysmorphic RBC's including acanthocytes - under darkfield/oblique illumination - from 2024 case of MPA - #UrineMicroscopy #UrinarySediment

Large mixed cellular cast with prominent fibrin matrix - brightfield with SM stain - from 2023 case of MPA - #UrinarySediment #UrineMicroscopy

Acanthocytes - brightfield, unstained - x1000 - #UrineMicroscopy #UrinarySediment

Flowing urinary uric acid crystals, under polarized light - #UrineMicroscopy #UrinarySediment

Acanthocyte - brightfield x1000, unstained - #UrineMicroscopy #UrinarySediment