Pediatric Duodenal Atresia

by Carlo Raj, MD

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    Here, we’ll take a look at duodenal atresia. So what does atresia mean to you? In pathology and embryology, atresia means lack of development. You’ve heard of esophageal atresia. You’ve heard of tricuspid atresia. You’ve heard of biliary atresia And here we have duodenal atresia. What’s the definition? Duodenal atresia is obstruction. Obstruction, why? Failure to recanalize the duodenal lumen. Now, what does this mean to you? And when does this occur? Did this occur after birth or before delivery? Obviously before delivery, this is a congenital issue. I want you to go back into the womb of the mother. We do that quite a bit in pathology, don’t we? So there you are in the womb of the mother and you’re lying in the maternal placenta. The duodenum fails to recanalize. Simple amniotic fluid circulation for pathology that would help you answer any question dealing with what's known as as amnios or hydramnios? Let’s talk about this one, the duodenum in the uterus is not properly formed, the fetus. And so now at this point, what the fetus is doing is regurgitating the amniotic fluid into the placenta. If you’re regurgitating the amniotic fluid into the placenta, there’s excess fluid in the placenta. How are you as a clinician going to then identify the excess fluid? You do an ultrasound on the pregnant lady and you’re going to find increased amounts of amniotic fluid. We call this what? Polyhydramnios. Have you set up a picture yet? Next, as the child is delivered and at some point when the child starts feeding, then what may then happen? Once again, there’s an obstruction. Now where is the obstruction? I’ll explain this to you and then I’ll show you a picture of an abdominal x-ray. The stomach is not going to connect...

    About the Lecture

    The lecture Pediatric Duodenal Atresia by Carlo Raj, MD is from the course Pediatric GI Pathology.

    Included Quiz Questions

    1. Polyhydramnios
    2. Oligohydramnios
    3. Hyperemesis
    4. Meconium aspiration
    5. Small for gestational age
    1. Down's syndrome
    2. Patau syndrome
    3. Edwards syndrome
    4. Klinefelter syndrome
    5. Turner's syndrome
    1. Esophageal atresia
    2. Duodenal atresia
    3. Necrotising enterocolitis
    4. Volvulus
    5. Hirschsprung disease
    1. Double bubble sign
    2. Target sign
    3. Rat tail sign
    4. Multiple air shadows
    5. Snow storm sign
    1. Bilious vomiting
    2. Non bilious vomiting
    3. Short bouts of vomiting immediately after feeding
    4. Projectile type of vomiting
    5. Blood mixed vomiting

    Author of lecture Pediatric Duodenal Atresia

     Carlo Raj, MD

    Carlo Raj, MD

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