Urinalysis: Microscopy: Casts

Question 1

What are the different types of casts? (5)

Answer 1

1. hyaline
2. cellular
3. granular
4. waxy
5. fatty

Question 2

What type of cast is this?

1. Clear, colorless, refractile
2. Cylindrical, parallel sides, smooth rounded ends
3. Mildest form of renal irritation

Answer 2

Hyaline

Question 3

What type of cast is this?

1. epithelial
2. RBC/WBC

Answer 3

cellular

Question 4

What type of cellular cast this?

1. Comprised of renal epithelial
2. Acute nephritis

Answer 4

epithelial

Question 5

What type of cellular cast is this?

1. WBC
   - Indicates infectious process in tubules
2. RBC
   - inflammation in tubules

Answer 5

RBC/WBC

Question 6

What type of cast is this?

1. Degenerating cellular components
2. indication of intestinal nephritis

Answer 6

Granular

Question 7

What type of cast is this?

1. Wider, square ends
2. Opaque
3. Chronic severe degeneration in tubules

Answer 7

Waxy

Question 8

What type of cast is this?

1. Small droplets of fat - refractile
2. Cats with renal disease

Answer 8

Fatty

Question 9

What is the most severe cast?

Answer 9

waxy