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.


Bilirubin cast from the urinary sediment of the preceding patient. Unstained, X400.

---

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.