Leucocytes Benign Disorders - Quantitative Changes and Terminology
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Questions and Answers

What is the normal reference range for total white blood cell count in adults?

4.5 - 11.0 x 10^9 /L

Define leucocytosis.

Raised TWBC due to elevation in any of the populations of white blood cells.

Explain the term leucopenia.

TWBC lower than the reference range for the age, affecting one or more lineages.

Differentiate between relative and absolute values in white blood cell counts.

<p>Differential gives the percentage of each WBC, while absolute count gives the actual number of each WBC/mm3 of blood.</p> Signup and view all the answers

List the different types of granulocytes.

<p>Neutrophils, Eosinophils, Basophils</p> Signup and view all the answers

What are the two main types of phagocytic cells in the immune system?

<p>Monocytes, Macrophages</p> Signup and view all the answers

What is the definition of neutrophilia?

<p>Increase in the number precursors of neutrophils and count &gt;7.5 x 10^9 /L in adults</p> Signup and view all the answers

List three causes of neutrophilia.

<p>Infection, inflammatory conditions, autoimmune disorders</p> Signup and view all the answers

What is neutropenia?

<p>An absolute reduction in the number of circulating neutrophils</p> Signup and view all the answers

List three causes of eosinophilia.

<p>Allergy, infection, malignancy</p> Signup and view all the answers

What is hypereosinophilic syndrome?

<p>Peripheral blood eosinophil count &gt;1.5 x 10^9 /L, persistence of counts for more than 6 months, end organ damage</p> Signup and view all the answers

Define granulocytosis.

<p>Increase in the count of all or one of the granulocytic components (neutrophils, basophils, eosinophils)</p> Signup and view all the answers

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