Sentence Examples


  • Prenatal diagnosis of neural tube defects causing anencephaly or meningomyelocele is possible through ultrasound examination and maternal blood testing for alpha-fetoprotein, which is almost always elevated.
  • If this tube forms incompletely during the first few months of pregnancy, a serious, and often fatal, defect results in spina bifida or anencephaly (formation of the head without the brain).
  • Neural tube defects like spina bifida and anencephaly are being researched as possible defects where environmental states may affect the development of the fetus as well as genetics.
  • One such congenital brain anomaly, anencephaly (literally "without brain") results when the topmost portion of the tube fails to close and the brain does not develop.
  • Anencephaly is sometimes seen to run in families, and for parents who have conceived one anencephalic fetus, the risk of a second is as high as 5 percent.