Duodenal atresia. The incidence of duodenal atresia is 1 in 10,000 live births. The characteristic "double-bubble" sign, corresponding to the dilated stomach and the duodenum, can be seen on ...

"The earliest in pregnancy that the fetus's sex can be determined by ultrasound is about 12 weeks ... including Down Syndrome, trisomy 18, and trisomy 13. It can also determine sex by chromosomal ...

By Dr Lynda Nazareth Down’s syndrome is one of the most common chromosomal abnormalities that affects approximately 1 in ...