Information about fetal anomaly scan measurements
This information is for you if a small measurement is the only unexpected finding on your fetal anomaly scan. Your midwife or hospital doctor (obstetrician) will explain in more detail which tests and care you might need. Every pregnant woman in Wales is offered a fetal anomaly scan when they are between 18 and 20 weeks pregnant.
The scan checks whether your baby appears to be developing as expected. This means it may show unexpected findings, such as a small measurement, and you may be offered further tests.