![](BILCAST1.jpg)
Bilirubin cast from the urinary sediment of a patient with cancer of the liver. It is a pigmented bile cast and yellowish brown, such as is often seen in patients with severe bilirubinuria or jaundice. Bilirubin may stain cells or crystals as well. Unstained, X400.
![](BILCAST2.jpg)
Bilirubin cast from the urinary sediment of the preceding patient. Unstained, X400.
![](BILCAST3.jpg)
Bilirubin cast from the urinary sediment of a patient with congenital biliary atresia. There are many renal tubular epithelial cells stained with bilirubin. Unstained, X400.
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