Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025
Definition
Hypoplasia is the underdevelopment or incomplete development of a tissue or organ. It can be caused by various factors, including viral infections that interfere with normal cellular processes.
Certain viruses, such as Rubella and Cytomegalovirus, are known to cause hypoplasia in developing fetuses.
Hypoplasia can affect various organs, including the brain, heart, and limbs, leading to significant developmental issues.
The timing of a viral infection during pregnancy is crucial; early infections are more likely to result in hypoplasia.
Hypoplasia resulting from viral infections can lead to lifelong disabilities depending on the organ affected.
Diagnosis of hypoplasia often involves imaging techniques like ultrasound, MRI, or CT scans to assess the extent of underdevelopment.
Related terms
Aplasia: The complete absence of an organ or tissue due to failure in development.
Teratogen: An agent or factor that causes malformation of an embryo.
Congenital Defect: A physical or biochemical abnormality present at birth that may be caused by genetic factors or environmental influences such as viruses.