Siobhan M. Dolan MD MPH


Male With Klinefelter Syndrome

Klinefelter syndrome is a genetic condition that affects males. Klinefelter syndrome occurs when a boy is born with one or more extra X chromosomes. Most males have one Y and one X chromosome. Having extra X chromosomes can cause a male to have some physical traits that are unusual for males. Many men with Klinefelter…

Neural Tube Defect

A neural tube defect (NTD) is a birth defect that occurs when the spine, the brain, or the bone and skin that protect them do not develop properly. The most common type of neural tube defect is spina bifida, in which the spinal cord or spinal nerves may bulge out through an opening in the bones of the spine. The neural…

Birth Defects Testing

What are birth defects tests? Birth defects tests are done during pregnancy to look for possible problems with the baby (fetus). Birth defects develop when something is wrong with genes or chromosomes, an organ, or body chemistry. A birth defect may have only a mild impact on a child’s life, or it can have a major…

Neural Tube Defect

A neural tube defect (NTD) is a birth defect that occurs when the spine, the brain, or the bone and skin that protect them do not develop properly. The most common type of neural tube defect is spina bifida, in which the spinal cord or spinal nerves may bulge out through an opening in the bones of the spine. The neural…

Nuchal Translucency Screening Test

The nuchal (say “NEW-kuhl”) translucency screening is a test done during pregnancy. It uses ultrasound to measure the thickness of the fluid buildup at the back of the developing baby’s neck. If this area is thicker than normal, it can be an early sign of Down syndrome, trisomy 18, or heart problems. The test is done…