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Abnormalities
Abnormalities in Organ Development
Abnormality | Definition |
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Aplasia | a developmental failure resulting in the absence of an organ or tissue |
Hypoplasia | an incomplete development or underdevelopment of an organ or tissue, which is usually the result of a decrease in the number of cells |
Atrophy | a wasting or diminution of size or activity of a part of the body, usually the result of an abnormal decrease in cell size |
Hypertrophy | an increase in the size of an organ caused by an increase in the size of the cells rather than the number of cells |
Hyperplasia | an increase in the number of cells of a body part |
Dysplasia | any abnormal development of tissues or organs |
Anaplasia | a change in the structure or orientation of cells characterized by the production of abnormal, undifferentiated cells |