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Granular & “Muddy Brown” Casts on Urine Microscopy
A. Finely granular cast B. slightly coarser granular cast
Granular & “Muddy ... BrownCasts on ... Urine Microscopy ... coarse (c) and muddy ... brown (mb) granular
Muddy Brown Granular Casts three ways - Brightfield, Darkfield, Phase Contrast.

Dr. Vipin Varghese @vipvargh

#Muddy #Brown #Granular
Muddy Brown Granular ... Casts three ways ... #Brown #Granular ... #Casts #clinical ... #urine #microscopy
Examples of varying granular and granular/waxy mixed casts: 
A: coarse granular/broad-waxy (and surrounding white blood cells);
granular/waxy mixed casts ... brown granular, ... brown granular/ ... Granular #MuddyBrown #Casts ... #Urine #Microscopy
Muddy Brown Casts in ATN
#Clinical #Path #Nephro #Urine #Microscopy #MuddyBrownCasts #ATN
Muddy Brown Casts ... #Path #Nephro #Urine
Urine Microscopy - Casts
Acellular Casts
 • Hyaline Casts - Consists of only precipitated Tamm-Horsfell protein without
Urine Microscopy ... - Casts Acellular ... Casts • Hyaline ... • "Muddy Brown ... #Urine #Microscopy
Atlas of Urine Microscopy Findings
 • Epithelial cells - Normal
 • Renal tubular cells - Acute
Atlas of Urine Microscopy ... also be seen if urine ... renal disease • “Muddy ... brown cast” - Necrotic ... contamination #Urine
Diagnosis of ascites according to the serum ascites albumin gradient (SAAG)
SAAG ≥ 1.1:
 - Ascitic protein
albumin gradient (SAAG ... ) SAAG ≥ 1.1: ... Cirrhosis, Late Budd-Chiari ... pericarditis, Early Budd-Chiari ... differential #diagnosis #algorithm
Urinary Casts and Disease Associations
Hyaline - May be nonspecific; seen in normal individuals or during severe
Urinary Casts and ... and concentrated urine ... breakdown of cellular casts ... "Muddy-brown" heme-granular ... casts are seen
Causes of Ascites
Normal Peritoneum
Portal hypertension (SAAG > 1.1 g/dL)
  1. Hepatic congestionl
hypertension (SAAG ... insufficiency - Budd-Chiari ... Hypoalbuminemia (SAAG ... Nephrogenic ascites - Urine ... - Myxedema (SAAG
Core IM: Pearls on Contrast-Induced Nephropathy

Definition: 
 • no slam dunk criteria 
 • definition in
signs of ATN (muddy ... brown casts)