Anencephaly is a condition in which a fetus forms with a partially formed brain and spinal cord. A child with this condition is stillborn or dies shortly after birth.
Anencephaly can be detected with prenatal tests, such as ultrasound and amniocentesis. If a woman learns that she is pregnant with a fetus that has anencephaly, termination of the pregnancy is usually offered.
WebMD Medical Reference from Healthwise