12 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
Acellular Casts ... • "Muddy Brown ... suggestive of acute ... in a variety of acute ... ) • Granular Casts
Urinary Casts and Disease Associations
Hyaline - May be nonspecific; seen in normal individuals or during severe
Urinary Casts and ... concentrated urine Granular ... "Muddy-brown" heme-granular ... casts are seen ... in acute tubular
Atlas of Urine Microscopy Findings
 • Epithelial cells - Normal
 • Renal tubular cells - Acute
tubular cells - Acute ... • White cell casts ... renal disease • Granular ... renal disease • “Muddy ... protein indicating acute
Algorithmic Approach to Acute Interstitial Nephritis
When to suspect AIN? (not sensitive)
 • AKI, AKD, rapidly progressive
Algorithmic Approach ... to Acute Interstitial ... tubular proteinuria, granular ... casts/RTE; blend ... MatthewHoMD #Acute
Core IM: Pearls on Contrast-Induced Nephropathy

Definition: 
 • no slam dunk criteria 
 • definition in
hypoxic/cytotoxic acute ... signs of ATN (muddy ... brown casts)
Acute promyelocytic leukemia (blood). Typical morphologic features are bilobed ("butterfly") nuclei with dispersed chromatin, subtle to
Acute promyelocytic ... overt cytoplasmic granules ... features in most cases ... #Auer #Rods #Acute
Causes of Acute Kidney Injury (AKI) - Differential Diagnosis Algorithm
Acute Kidney Injury (AKI) - Acute increase
Causes of Acute ... Differential Diagnosis Algorithm ... Epithelial cell casts ... Obstruction • Cast ... Differential #Diagnosis #Algorithm