
Muddy Brown Cast
What is ATN (Acute Tubular Necrosis)



Pigmented Casts (may have multiple answers)
What is Rhabdomyolysis or Hemolytic Anemia (myoglobin, hemoglobin/bilirubin, etc)

Aspirin sensitivity, Nasal polyps, & Asthma

RBC Casts
What is glomerulonephritis

What is Schistocytes (microangiopathic hemolytic diseases)
Chorioretinitis, hydrocephalus, intracranial calcifications


Eosinophilic Cast
What is AIN (Acute Interstitial Nephritis)

Aminoaciduria, Proteinuria, Phosphaturia

Fatty Casts (lipid droplets)
What is Nephrotic Syndrome (possibly also CKD/Hypothyroidism)

What is Basophilic Stippling often due to lead poisoning (numerous basophilic granules due to abnormal erythropoiesis)