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Abnormalities

Abnormalities in Organ Development

AbnormalityDefinition
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
Created by: eellis