A type of neural tube disorder where the baby's brain does not form. This is caused by a failure of the neural tube to close properly very early in the babies' development. Anencephalic babies often die prior, but can live a few hours after being born. Studies show that the presence of folic acid in the mother's blood at the time of conception greatly reduces the number of neural tube disorders. It does not, however, prevent them entirely. In Westernized countries most women get sufficient folic acid in their diet and the numbers of the disorders have not dropped dramatically despite huge campaigns.
a defect in the closure of the neural tube during foetal development. The neural tube is a narrow channel that folds and closes between the 3rd and 4th weeks of pregnancy to form the brain and spinal cord of the embryo. Anencephaly occurs when the "cephalic" or head end of the neural tube fails to close, resulting in the absence of a major portion of the brain, skull, and scalp. Infants with this disorder are born without a forebrain (the front part of the brain) and a cerebrum (the thinking and coordinating part of the brain) and do not survive for long after birth.
neural tube defect where the brain and skull do not form completely. Affected babies die, either before birth (stillbirth) or shortly thereafter. Because the brain is only partly formed, affected newborns cannot control basic life functions like breathing.
A neural tube defect (NTD) that occurs when the cephalic (head) end of the neural tube fails to close, usually between the 23rd and 26th days of pregnancy, resulting in the absence of a major portion of the brain, skull, and scalp. Infants with this disorder are born without a forebrain, the largest part of the brain consisting mainly of the cerebrum , which is responsible for thinking and coordination. The remaining brain tissue is often exposed; it is not covered by bone or skin. See the entire definition of Anencephaly
A congenital defect in the development of the brain. Bones in the skull and parts of the brain may be missing or poorly developed. An infant with anencephaly will either be stillborn or will die shortly after birth.
a condition that is present at birth and affects the formation of the brain and the skull bones that surround the head, resulting in only minimal development of the brain. There is no bony covering over the back of the head and there may also be missing bones around the front and sides of the head.
Abnormal development of the brain in the fetus accompanied by absence of the bones of the cranial vault. Children born with this severe disorder die shortly after birth. Measurement of maternal blood and amniotic fluid levels of alpha-fetoprotein (AFP) can help diagnose this condition and other neural tube defects. See alpha-fetoprotein.
Anencephaly is a cephalic disorder that results from a neural tube defect that occurs when the cephalic (head) end of the neural tube fails to close, usually between the 23rd and 26th day of pregnancy, resulting in the absence of a major portion of the brain, skull, and scalp. Infants with this disorder are born without a forebrain, the largest part of the brain consisting mainly of the cerebral hemispheres (which include the isocortex, which is responsible for higher level cognition, i.e., thinking). The remaining brain tissue is often exposed - not covered by bone or skin.