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Overview of craniofacial anomalies
Craniofacial anomalies (CFA) are a diverse group of deformities in the growth of the head and facial bones. Anomaly is a medical term meaning "irregularity" or "different from normal." These abnormalities are congenital (present at birth) and there are numerous variations - some are mild and some are severe and require surgery.
What causes craniofacial anomalies?
Most medical professionals agree that there is no single factor that causes these types of abnormalities. Instead, there are many factors that may contribute to their development, including the following:
- combination of genes - A child may receive a particular combination of gene(s) from one or both parents, or there may be a change in the genes at the time of conception, which results in a craniofacial anomaly.
- environmental - There is no data that shows a direct correlation between any specific drug or chemical exposure causing a craniofacial anomaly. However, any prenatal exposure should be evaluated.
- folic acid deficiency - Folic acid is a B vitamin found in orange juice, fortified breakfast cereals, enriched grain products, and green, leafy vegetables. Studies have shown that women who do not take sufficient folic acid during pregnancy, or have a diet lacking in folic acid, may have a higher risk of having a baby with certain congenital anomalies, including cleft lip and/or cleft palate.
What are the most common types of craniofacial anomalies?
Some of the most common types of craniofacial anomalies include the following:
- cleft lip and/or cleft palate - a separation that occurs in the lip or the palate (roof of the mouth), or both. Cleft lip and cleft palate are the most common congenital craniofacial anomalies seen at birth.
- cleft lip - an abnormality in which the lip does not completely form. The degree of the cleft lip can vary greatly, from mild (notching of the lip) to severe (large opening from the lip up through the nose).
- cleft palate - occurs when the roof of the mouth does not completely close, leaving an opening that can extend into the nasal cavity. The cleft may involve either side of the palate. It can extend from the front of the mouth (hard palate) to the throat (soft palate). The cleft may also include the lip.
- craniosynostosis - a condition in which the sutures (soft spots) in the skull of an infant close too early, causing problems with normal brain and skull growth. Premature closure of the sutures may also cause the pressure inside of the head to increase and the skull or facial bones to change from a normal, symmetrical appearance.
- hemifacial microsomia - a condition in which the tissues on one side of the face are underdeveloped, affecting primarily the ear (aural), mouth (oral), and jaw (mandibular) areas. Sometimes, both sides of the face can be affected and may involve the skull, as well as the face. Hemifacial microsomia is also known as Goldenhar syndrome, brachial arch syndrome, facio-auriculo-vertebral syndrome (FAV), oculo-auriculo-vertebral spectrum (OAV), or lateral facial dysplasia.
- vascular malformation - a birthmark or a growth, present at birth, which is composed of blood vessels that can cause functional or aesthetic problems. Vascular malformations may involve multiple body systems. There are several different types of malformations and they are named according to which type of blood vessel is predominantly affected. Vascular malformations are also known as lymphangiomas, arteriovenous malformations, and vascular gigantism.
- hemangioma - a type of birthmark; the most common benign (non-cancerous) tumor of the skin. Hemangiomas may be present at birth (faint red mark) or appear in the first months after birth. A hemangioma is also known as a port wine stain, strawberry hemangioma, and salmon patch.
- deformational (or positional) plagiocephaly - a misshapen (asymmetrical) shape of the head (cranium) from repeated pressure to the same area of the head. Plagiocephaly literally means "oblique head" (from the Greek "plagio" for oblique and "cephale" for head).
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