Auer rods (or Auer bodies)
Auer rods (or Auer bodies) –
![Myeloblast with Auer rod](https://upload.wikimedia.org/wikipedia/commons/6/6c/Myeloblast_with_Auer_rod.jpg)
Large, crystalline cytoplasmic inclusion bodies
Observed in myeloid blast cells in cases of :
- Acute myeloid leukemia,
- Acute promyelocytic leukemia,
- High-grade myelodysplastic syndromes
- Myeloproliferative disorders
- Composed of fused lysosomes and rich in lysosomal enzymes,
Auer rods are azurophilic and can resemble needles, commas