Increased nuchal translucency in 13th week fetal ultrasound characteristic of ?
Turner syndrome
Down's syndrome
Hydrocephalus
Klinefelter syndrome
Down's syndrome is the most common cause of increased nuchal translucency in fetal ultrasound. The other causes are Trisomy 13, Trisomy 18, Klinefelter syndrome & Turner's syndrome Ref : Dutta book of obstetrics 8th Ed
All India exam