26 results
Granular & “Muddy Brown” Casts on Urine Microscopy
A. Finely granular cast B. slightly coarser granular cast
Granular & “Muddy ... Brown” Casts on ... Finely granular cast ... coarse (c) and muddy ... better appreciated at
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
Urine Microscopy - Casts
Acellular Casts
 • Hyaline Casts - Consists of only precipitated Tamm-Horsfell protein without
Acellular Casts ... • Hyaline Casts ... • "Muddy Brown ... tubular necrosis (ATN ... Contains yellow-tan
Examples of varying granular and granular/waxy mixed casts: 
A: coarse granular/broad-waxy (and surrounding white blood cells);
granular/waxy mixed casts ... light granular/muddy ... granular, C and D: muddy ... Granular #MuddyBrown #Casts
Muddy Brown Casts in ATN
#Clinical #Path #Nephro #Urine #Microscopy #MuddyBrownCasts #ATN
Muddy Brown Casts ... in ATN #Clinical ... MuddyBrownCasts #ATN
Atlas of Urine Microscopy Findings
 • Epithelial cells - Normal
 • Renal tubular cells - Acute
sample is not fresh at ... • White cell casts ... disease • Granular casts ... renal disease • “Muddy ... brown cast” - Necrotic
Core IM: Pearls on Contrast-Induced Nephropathy

Definition: 
 • no slam dunk criteria 
 • definition in
look for signs of ATN ... (muddy brown ... casts) • FENa
Urinary Casts and Disease Associations
Hyaline - May be nonspecific; seen in normal individuals or during severe
Urinary Casts and ... breakdown of cellular casts ... "Muddy-brown" heme-granular ... casts are seen ... 34t5DgJ #Urinary #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
Algorithmic Approach to Acute Interstitial Nephritis
When to suspect AIN? (not sensitive)
 • AKI, AKD, rapidly progressive
Algorithmic Approach ... When to suspect AIN ... sterile pyuria, WBC casts ... proteinuria, granular casts ... #Algorithm #nephrology