GIT Atresias

Question 1

What is an atresia?

Answer 1

• = Absence or abnormal narrowing of an opening/passage

Question 2

What is wrong in biliary atresia?

Answer 2

• Congenital absence/severe deficiency of extrahepatic biliary tree

Question 3

Consequences of biliary atresia

Answer 3

• Neonatal cholestasis -> cirrhosis -> death

- Portal hypertension

Question 4

When does biliary atresia present?

Answer 4

2w-2mo

Question 5

What is wrong in oesophageal atresia?

Answer 5

inappropriate division of foregut into trachea and oesophagus

Question 6

When is oesophageal atresia detected?

Answer 6

• Antenatal - US, neonate - poor swallowing/aspiration

Question 7

How will you know if an oes atresia is associated with a trache-oes fistula?

Answer 7

• If there is air in the stomach and bowel with oesophageal atresia, implies distal fistula

Question 8

What kind of vomit is usually seen with duodenal atresia?

Answer 8

• Usually bilious vomiting as atresia usually distal to ampulla of vater

Question 9

What is a key feature seen on AXR with duodenal atresia?

Answer 9

• Double bubble sign (gas filled stomach and duodenum, with nothing behind)
• Also seen in duodenal stenosis

Question 10

What conditions are GI atresias often associated with?

Answer 10

• T21
• VACTERL
• Annular pancreas
• Other intestinal atresia