Disorders of leukocytes lecture and presentation
Download as PPTX, PDF0 likes14 views
The document discusses disorders of leucocytes, categorizing them into quantitative (related to counts) and qualitative (related to structural or functional abnormalities). Key terms defined include leucocytosis (increased leucocyte count), leucopenia (decreased leucocyte count), and leukemoid reaction (high leucocyte count with immature cells). It also covers neutrophilia (increased neutrophil count) and neutropenia (decreased neutrophil count), along with the concept of 'shift to left' indicating an increase in immature granulocytes.
1 of 6
Download to read offline
Disorders of leukocytes lecture and presentation
- 1. DISORDERS OF LEUCOCYTES DR. AREEJ HAQUE JR-2, PATHOLOGY
- 2. DEFINITIONS • QUANTITATIVE DISORDERS – They are related to the concentration of leucocytes (leucocyte counts) in peripheral blood. • QUALITATIVE DISORDERS – They refer to the structural or functional abnormalities of white blood cells. • LEUCOCYTOSIS - It is defined as an increase in the number of circulating leucocytes (total leucocyte count) above the upper level of normal. • LEUCOPENIA - refers to total leucocyte count below the lower limit of normal. • LEUKEMOID REACTION – It refers to the presence of markedly increased leucocyte count (>50,000/cmm) and immature white blood cells in peripheral blood resembling leukaemia but occurring in non-leukaemic conditions.
- 4. NEUTROPHILIA • NEUTROPHILIA - Neutrophilia or neutrophilic leucocytosis is an increase in the absolute neutrophil count above normal level (usually > 7,500/cmm).
- 5. NEUTROPENIA • NEUTROPENIA – It refers to reduction in the number of neutrophils in the peripheral blood below the normal level.
- 6. SHIFT TO LEFT SHIFT TO LEFT: Increased percentage of immature granulocytes in peripheral blood (usually up to bands and metamyelocytes)