Nuchal Translucency (NT)
The normal fetal neck	Sonographic approach to increased NT
Technique for measuring the NT	Mechanisms of increased NT thickness.
Normal NT values	NT thickness and chromosomal aneuploidy
Normal NT values at our institute	Detection rates of chromosomal aneuploidy
Calculation of risk, sensitivity and false positive rates of a fetal anomaly	NT thickening and the chromosomally normal fetus
Ductus venosus A wave and NT	NT and twin pregnancies
	NT and cardiac anomalies in the euploid fetus
	NT and genetic syndromes
	NT and structural fetal anomalies
	NT and skeletal anomalies
	NT and the nasal bone
	Absent nasal bone and Fragile X Syndrome
Conclusions
Biochemical markers in nuchal translucency screening

REFERENCES

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3. Nicolaides KH, Azor G, Byrne D et.al. Fetal nuchal translucency: ultrasound screening for chromosomal defects in the first trimester of pregnancy. Br Med J 1992;304:867-869
4. Pandya PP, Kondylios L, Hilbert L et.al. Chromosomal defects and outcome in 1015 fetuses with increased nuchal translucency. Ultrasound Obstet Gynecol 1995;5:15-19
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