Leukopenia or leukocytopenia refers to a decrease in the number of circulating white blood cells (leukocytes) in the blood. As the principal function of white cells is to combat infection, a decrease in the number of these cells can place patients at increased risk for infection. The following codes are used with International Statistical Classification of Diseases and Related Health Problems. ... The International Classification of Diseases for Oncology (ICD-O) is a domain specific extension of the International Statistical Classification of Diseases and Related Health Problems for tumor diseases. ... The following is a list of codes for International Statistical Classification of Diseases and Related Health Problems. ... The Mendelian Inheritance in Man project is a database that catalogues all the known diseases with a genetic component, and - when possible - links them to the relevant genes in the human genome. ... MedlinePlus (medlineplus. ... eMedicine is an online clinical medical knowledge base that was founded in 1996. ... The Diseases Database is a free website that provides information about the relationships between medical conditions, symptoms, and medications. ... White blood cells (also called leukocytes or immune cells) are a component of blood. ... Red blood cells (erythrocytes) are present in the blood and help carry oxygen to the rest of the cells in the body Blood is a circulating tissue composed of fluid plasma and cells (red blood cells, white blood cells, platelets). ... An infection is the detrimental colonization of a host organism by a foreign species. ... An infection is the detrimental colonization of a host organism by a foreign species. ...

In pancytopenia, the other cell types in the blood (red blood cells and platelets) are similarly affected. Pancytopenia is a condition in which there is a reduction in the number of Red and White blood cells, as well as platelets. ... Human red blood cells Red blood cells are the most common type of blood cell and are the vertebrate bodys principal means of delivering oxygen from the lungs or gills to body tissues via the blood. ... A 250 ml bag of newly collected platelets. ...

Neutropenia refers to the absence of neutrophil granulocytes, the most abundant white blood cells. The terms leukopenia and neutropenia may occasionally be used interchangeably, as the neutrophil count is the most important indicator of infection risk. However, neutropenia is more properly considered a subset of leukopenia as a whole. It has been suggested that Agranulocytosis be merged into this article or section. ... Neutrophil granulocytes, generally referred to as neutrophils, are a class of white blood cells and are part of the immune system. ...

Low white cell counts are associated with chemotherapy, leukemia (as malignant cells overwhelm the bone marrow), myelofibrosis and aplastic anemia (destruction of the bone marrow by the immune system). In addition, many common medications can cause leukopenia. Chemotherapy is the use of chemical substances to treat disease. ... Leukemia (leukaemia in Commonwealth English) is a cancer of the blood or bone marrow characterized by an abnormal proliferation of white blood cells (leukocytes). ... Myelofibrosis, one of the myeloproliferative diseases, is the gradual replacement of the bone marrow by connective tissue. ... Aplastic anemia is a condition where the bone marrow does not produce enough, or any, new cells to replenish the blood cells. ... A medication is a licenced drug taken to cure or reduce symptoms of an illness or medical condition. ...

It can be identified with a complete blood count. A complete blood count (CBC) or full blood count (FBC) is a test requested by a doctor or other medical professional that gives information about the cells in a patients blood. ...