Question of the Day

Pyelonephritis can result in cellular casts containing white blood cells. 

Look for cellular casts (recognizable cells in cast) like sloughed epithelial cells, red blood cells (with renal hemorrhage), or white blood cells (with pyelonephritis).

Renal dysplasia is a congenital malformation of the kidneys and does not typically result in casts in the urine.

Look for hyaline casts (clear, semitransparent) with mild glomerular leakage.

You may also see granular casts (common, nonspecific, made of degenerating cells) or fatty casts in some cats.