Trilogy of foregut, midgut and hindgut atresias presenting in reverse order

We have some very interesting images for you but, can you answer the questions below?

1. How do gut atresias arise?
2. How might these abnormalities present?
3. What is the role of antenatal screening?
4. What are the limitations of antenatal screening in detecting gut atresias?

If you don’t know the answers or want to know more read ’Trilogy of foregut, midgut and hindgut atresias presenting in reverse order’