Intermediate
Technical
In the Industry Vocabulary Test
Anomaly Scan
A detailed ultrasound examination performed between 18-22 weeks' gestation to detect structural fetal abnormalities.
Full Definition
The anomaly scan, also known as the mid-trimester scan, is a comprehensive ultrasound examination typically performed between 18-22 weeks of pregnancy. This scan systematically evaluates fetal anatomy including the brain, spine, heart, kidneys, limbs, and facial structures. It serves as a critical screening tool for detecting major structural abnormalities such as spina bifida, congenital heart defects, and limb malformations. The scan also assesses placental location, amniotic fluid levels, and fetal growth parameters.
Usage
Usage note: Always hyphenate when used as an adjective modifier.
In Context
- "The anomaly scan revealed a ventricular septal defect requiring pediatric cardiology consultation." — Ultrasound report
- "All major fetal structures appeared normal on the 20-week anomaly scan." — Clinical documentation
Also known as
mid-trimester scan
detailed scan
18-20 week scan
Don't confuse with
dating scan
growth scan