Types of Leukaemia:

Based on clinical findings and immature cells, leukaemia can be classified into 2 types:

1. Acute leukaemia:

• It causes a high production of immature blood cells that cannot function properly.
• There are predominant blast cells in blood and bone marrow.
• It is typically accompanied by severe symptoms.

2. Chronic leukaemia:

• It progresses slowly and steadily overtime.
• Blood cells in chronic leukaemia are fully mature and can perform their normal function but not as well.

Based on total WBC count, leukaemia can be classified into 2 types:

1. Leukaemic leukaemia:

• In this type of leukaemia, count of WBC is more than 15000/c mm.
• There are plenty of premature leucocytes in blood.

2. Aleukaemic leukaemia:

• There are moderate to few numbers of premature cells in blood.

Based on point of origin, leukaemia can be classified as:

1. Myelogenous leukaemia:

• These leukaemia are originated from myeloid cells in bone marrow.
• It is less common in dog and cat.

2. Lymphocytic leukaemia:

• These leukaemia originates from lymphoid tissues and affects lymphoid organ or cells.
• It is more common in dog and cats.