Examples of physical abnormalities that may possibly be detected during a 20-week ultrasound scan include:
- Open spine (spina bifida)
- Open skull
- Hydrocephalus (fluid build-up in the brain)
- A defect or opening in the abdominal wall
- A defect or opening in the diaphragm
- Clubfoot
- Cleft lip (with or without cleft palate)
- Absence or abnormalities of the kidneys
- Abnormalities of the arms or legs
- Abnormal bone development
- Heart abnormalities
During the 20-week ultrasound scan, the sonographer may sometimes see an abnormality that can also occur in a child with a chromosomal abnormality (or another hereditary condition). It is important to know that not all serious chromosomal abnormalities are associated with abnormalities that can be detected during a 20-week ultrasound scan.
If you would like to have your baby screened for Down syndrome, Edwards syndrome or Patau syndrome, you can choose the NIPT (Non-Invasive Prenatal Test).
What results can you receive?You will receive the results of the examination for physical abnormalities immediately after the ultrasound scan. No indication of an abnormality:
This is the result for 95 out of 100 pregnant women.
→ No further examination is needed.
The sonographer would like to perform another ultrasound scan
You will receive this result when the sonographer is unable to see your baby clearly enough. This does not necessarily mean that something is wrong. For example, your baby’s position in the womb may make it difficult to see everything that the sonographer would like to assess.If the sonographer is unsure, you will be asked to return for another scan. → The ultrasound scan will be repeated.
An abnormality has been detected.
Further examination is needed to be certain. You will receive this result if the sonographer sees something unusual. Further investigation is needed to find out exactly what has been detected and what this may mean for your baby.
→ You can choose to have further examination at a Prenatal Diagnostic Centre. Depending on the type of abnormality, you will be referred to either MMC or MUMC+ in this region. You decide yourself whether you would like to have further testing.
An abnormality has been detected.
Further examination is not needed. You will receive this result if the sonographer sees something that is not serious and that usually resolves on its own.
→ Later in your pregnancy, you will have another ultrasound scan. The sonographer will then check whether it has indeed disappeared.
Practical Information
We kindly ask you not to bring children with you to the 20-week ultrasound scan:
- The scan takes approximately 45 minutes.
- A specially trained sonographer will perform the ultrasound scan at our practice.
- The ultrasound scan is covered by your health insurance. You do not have to pay anything yourself.
For more information, please visit
this website.