11 results
Granular & “Muddy Brown” Casts on Urine Microscopy
A. Finely granular cast B. slightly coarser granular cast
Granular & “Muddy ... Finely granular ... coarser granular ... coarse (c) and muddy ... brown (mb) granular
Examples of varying granular and granular/waxy mixed casts: 
A: coarse granular/broad-waxy (and surrounding white blood cells);
and granular/waxy ... mixed casts: ... /muddy brown granular ... , C and D: muddy ... #Casts #Urine #
Muddy Brown Granular Casts three ways - Brightfield, Darkfield, Phase Contrast.

Dr. Vipin Varghese @vipvargh

#Muddy #Brown #Granular
Muddy Brown Granular ... Casts three ways ... Varghese @vipvargh #Muddy ... #Brown #Granular ... #Casts #clinical
Urine Microscopy - Casts
Acellular Casts
 • Hyaline Casts - Consists of only precipitated Tamm-Horsfell protein without
Urine Microscopy - Casts ... Acellular Casts ... • Hyaline Casts ... • "Muddy Brown ... ) • Granular Casts
Urinary Casts and Disease Associations
Hyaline - May be nonspecific; seen in normal individuals or during severe
Urinary Casts and ... concentrated urine Granular ... breakdown of cellular casts ... "Muddy-brown" heme-granular ... casts are seen
Atlas of Urine Microscopy Findings
 • Epithelial cells - Normal
 • Renal tubular cells - Acute
• White cell casts ... renal disease • Granular ... casts - More significant ... renal disease • “Muddy ... brown cast” - Necrotic
Muddy Brown Casts in ATN
#Clinical #Path #Nephro #Urine #Microscopy #MuddyBrownCasts #ATN
Muddy Brown Casts
Algorithmic Approach to Acute Interstitial Nephritis
When to suspect AIN? (not sensitive)
 • AKI, AKD, rapidly progressive
Algorithmic Approach ... sterile pyuria, WBC casts ... tubular proteinuria, granular ... casts/RTE; blend ... Nephritis #AIN #Algorithm
Core IM: Pearls on Contrast-Induced Nephropathy

Definition: 
 • no slam dunk criteria 
 • definition in
signs of ATN (muddy ... brown casts)
Diagnosis of ascites according to the serum ascites albumin gradient (SAAG)
SAAG ≥ 1.1:
 - Ascitic protein
ascites albumin gradient ... Cirrhosis, Late Budd-Chiari ... pericarditis, Early Budd-Chiari ... ascites #albumin #gradient ... differential #diagnosis #algorithm