Disorders, lymphoproliferative
Disorders, lymphoproliferative: Malignant diseases of the lymphoid cells and cells from the reticuloendothelial system (which take up and sequester inert particles). The lymphoproliferative disorders are in contrast to the myeloproliferative disorders which are malignancies of certain bone marrow cells including those that give rise to the red blood cells, the granulocytes (types of white blood cells), and the platelets (crucial to blood clotting).
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- Disorders, myeloproliferative
Disorders, myeloproliferative: Malignant diseases of certain bone marrow cells including those that give rise to the red blood cells, the granulocytes (types of white blood cells), and the platelets (crucial to blood clotting). The myeloproliferative disorders include myelophthisic anemia, erythroblastic leukemia, leukemoid reaction, myelofibrosis, myeloid metaplasia, polycythemia vera, and essential thrombocythemia. The myeloproliferative disorders are […]
- Disruption sequence
Disruption sequence: The events that occur when a fetus that is developing normally is subjected to a destructive agent such as the rubella (German measles) virus.
- Dissect
Dissect: To cut apart or separate tissue, as for anatomical study or in surgery. Also, an artery is said to dissect when its wall is torn, as in a dissecting aneurysm.
- Dissecting aneurysm
Dissecting aneurysm: An aneurysm in which the wall of an artery rips (dissects) longitudinally. This occurs because bleeding into the weakened wall splits the wall. Dissecting aneurysms tend to affect the thoracic aorta. They are a particular danger in Marfan syndrome.
- Dissection
Dissection: The process of cutting apart or separating tissue as, for example, in the study of anatomy or in the course of a surgical procedure.