47,XX,+21; 47,XY,+21; Trisomy 21
A disorder caused by the presence of an extra chromosome 21 and characterized by mental retardation and distinguishing physical features.
Anencephaly is a defect in the closure of the neural tube during fetal 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 (th...
Down Syndrome as related to Anencephaly
- Down Syndrome | Birth Defects | NCBDDD | CDC
Down syndrome is a condition in which a person has an extra chromosome. Chromosomes are small â€œpackagesâ€ of genes in the body. Babies with Down syndrome â€¦
- Down syndrome - Wikipedia
Down syndrome (DS or DNS), also known as trisomy 21, is a genetic disorder caused by the presence of all, or part of a third copy of chromosome 21. It is typically ...
- What Are Prenatal Serum Screening Tests for Down Syndrome?
Serum Screening Tests. Now numerous serum screening tests (blood tests) are available during pregnancy that estimate your chance to have a baby with Down syndrome â€¦
- Growth Charts | Down Syndrome | Birth Defects | NCBDDD | â€¦
New growth charts (2015) for children with Down syndrome in the United States are available for download below. These charts can help healthcare providers monitor ...
- Older mothers: Down syndrome, trisomy 21, trisomy 18 ...
Down syndrome. Down syndrome (or Down's syndrome) was named after John Langdon Down (1828-1896), who was the first physician to identify it, in 1866.
- Anencephaly Causes, Symptoms, and Life Expectancy
Read about anencephaly, a neural tube defect that causes abnormal development of the brain and bones of the skull that affect several areas of the brain function such ...
- Definition of Down syndrome - MedicineNet
Definition of Down syndrome. Down syndrome: A common birth defect that is usually due to an extra chromosome 21 (trisomy 21). Down syndrome causes mental â€¦
- 99% of People With Down Syndrome Happy With Their Lives ...
99% of People With Down Syndrome Happy With Their Lives, Donâ€™t Abort Them
- Ohio Bill Would Ban Abortion if Down Syndrome Is Reason ...
An amniocentesis tests for open neural tube defects, such as spina bifida and anencephaly, by measuring a protein called alpha-fetoprotein (AFP) which detects 96 ...