Casts of the urinary sediment


Origin and composition

Tamm-Horsfall protein
Cast formation


A few nomenclature rules
The cast matrix

The hyaline matrix (hyaline cast)
The waxy matrix (waxy cast)

Cast format

Length (the short cast)
Width (large cast)
Shape (convolulted cast)

Blood casts

Cellular casts

Renal Tubular Cell casts (RTC cast)
White blood cells casts
Macrophage casts

Fatty casts

Granular casts

Type II granular casts
Type I granular casts
Dirty brown cast

Other inclusion casts

Bacterial and yeast casts
Crystal casts
Miscellaneous casts