647 results
Muddy Brown Casts in ATN
#Clinical #Path #Nephro #Urine #Microscopy #MuddyBrownCasts #ATN
Muddy Brown Casts ... in ATN #Clinical ... MuddyBrownCasts #ATN
Granular & “Muddy Brown” Casts on Urine Microscopy
A. Finely granular cast B. slightly coarser granular cast
Granular & “Muddy ... coarse (c) and muddy ... better appreciated at
Core IM: Pearls on Contrast-Induced Nephropathy

Definition: 
 • no slam dunk criteria 
 • definition in
look for signs of ATN ... (muddy brown
Causes of Acute Kidney Injury - Differential Diagnosis Framework 
Pre-Renal
Post-Renal
Intrinsic Renal:
 • Tubules (ATN)
 • Glomerular:
Kidney Injury - Differential ... : • Tubules (ATN ... Interstitium (AIN ... KidneyInjury #Causes #Differential
Urine Microscopy - Casts
Acellular Casts
 • Hyaline Casts - Consists of only precipitated Tamm-Horsfell protein without
• "Muddy Brown ... tubular necrosis (ATN ... Contains yellow-tan
Urinary Casts and Disease Associations
Hyaline - May be nonspecific; seen in normal individuals or during severe
cellular casts "Muddy-brown ... Urinary #Casts #Differential
Acute Kidney Injury (AKI) - Differential Diagnosis Framework
Pre-Renal:
 • Hypovolemia, Cardiorenal, Distributive Shock, HRS, Hypercalcemia, Renal
Injury (AKI) - Differential ... C3/C4, Other • ATN ... Pigment, Protein) • AIN ... Kidney #Injury #Differential
Intrinsic Renal Disease - Differential Diagnosis
Vascular:
 • Macrovascular: Renal artery occlusion, Fibromuscular disease
 • Microvascular: TTP/HUS,
Renal Disease - Differential ... Athero-embolic, HTN ... Ischemia-induced: ATN ... Disease #nephrology #differential
Atlas of Urine Microscopy Findings
 • Epithelial cells - Normal
 • Renal tubular cells - Acute
sample is not fresh at ... renal disease • “Muddy
Acute Kidney Injury (AKI) - Differential Diagnosis Framework
Prerenal:
 • Due to true volume loss or decreased
Injury (AKI) - Differential ... interstitium • ATN ... contrast dye) • AIN ... #Injury #AKI #Differential