1.
Proliferation of leukocytes with
failure of maturation-
accumulation of Blast cells-

2.
Acute Leukemia
• More than 20% Blasts in marrow

3.
Blast cell
• Nucleus occupies 4/5 of the cell
• Presence of nucleoli
• Fine chromatin

4.
MYELOBLAST /LYMPHOBLAST
• Auer rod in Myeloblast
• More cytoplasm in Myeloblast
• Fine chromatin in myeloblast
• coarser chromatin lymphoblast
• Nucleoli more in myeloblast[3-4]

5.
Auer rod

6.
Lymphoblast

7.
Acute Leukemia

8.
P A S

9.
Peroxidase

10.
Lymphoblast

11.
L 3 Blast

12.
M1

13.
AML M2

14.
AML-M3

15.
AML-M4

16.
M5

17.
M5

18.
M6

19.
M7