Patient's question:
After 31 weeks, the posterior fossa is approximately 10mm.Doctor's answer:
Prenatal diagnosis is an important medical process that helps couples who need it to have a healthy baby, and it is also a crucial measure to reduce birth defects and disabilities. In China, about 200,000 to 300,000 children with congenital deformities are born each year. Adding to the defects that only become apparent several months or years after birth, the total number of children with congenital disabilities reaches 800,000 to 1.2 million, accounting for approximately 4% to 6% of the annual birth population.