TRISOMY 21 with NT

Trisomy 21 with Increased Nuchal Translucency (NT) Introduction Trisomy 21, also known as Down syndrome, is a genetic disorder caused by the presence of an extra copy of chromosome 21. It is one of the most common chromosomal abnormalities, affecting approximately 1 in 700 live births. Prenatal screening plays a crucial role in early detection, and increased nuchal translucency (NT) is one of the key ultrasound markers associated with Down syndrome. Understanding Nuchal Translucency (NT) Nuchal translucency refers to the fluid-filled space at the back of a fetusโs neck, which can be measured via ultrasound between 11 and 14 weeks of gestation. An increased NT measurement is often associated with chromosomal abnormalities, congenital heart defects, and genetic syndromes, including Trisomy 21. Normal vs. Increased NT Measurements Normal NT : Typically less than 3.0 mm. Increased NT : Greater than 3.0 mm, which raises suspicion for chromosomal abnormalities. Trisomy 21 and NT Measu...