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PubMed This is a summary of 16 peer-reviewed journal articles Updated
Neonatology

Associated Conditions and Genetic Links

At a Glance

Duodenal atresia is strongly associated with other structural and genetic conditions, most notably Down syndrome (Trisomy 21) and congenital heart defects. Babies diagnosed with this condition will undergo comprehensive testing, including echocardiograms and ultrasounds, to ensure safe surgical care.

When a baby is diagnosed with duodenal atresia, it is very common for doctors to look for other conditions. This is because the development of the digestive tract is closely linked to the development of other organs, like the heart and spine [1][2].

While it can feel overwhelming to have so many tests ordered at once, this comprehensive approach ensures that your baby’s entire care team has the information they need to provide the safest and most effective care [3].

The Link to Down Syndrome (Trisomy 21)

One of the most frequent associations with duodenal atresia is Down syndrome, also known as Trisomy 21. Nearly one-third (30% to 40%) of babies born with duodenal atresia also have Down syndrome [4][5].

Because of this strong link, doctors will often suggest genetic screening or a blood test called a karyotype to check for chromosomal differences [6][7]. Knowing if a baby has Down syndrome helps the medical team plan for any additional long-term support the child might need. A Genetic Counselor is usually available to help your family interpret these results and navigate the emotional and informational aspects of this diagnosis.

Checking the Heart: Why an Echocardiogram?

An echocardiogram (a specialized ultrasound of the heart) is considered a standard part of the care for these infants [8][1].

The reason is twofold:

  1. High Association: Many babies with duodenal atresia—especially those with Down syndrome—have congenital heart defects [9][10]. Common findings include Atrial Septal Defects (a hole in the wall between the heart’s upper chambers) or Atrioventricular Septal Defects (more complex holes in the center of the heart) [8][11].
  2. Surgical Safety: The surgical team and anesthesiologist need to know exactly how the baby’s heart is functioning before the operation to ensure the baby remains stable under anesthesia [3].

Other Structural Anomalies

Doctors will also look for other structural issues that can occur alongside duodenal atresia:

Checking the Kidneys and Spine

Doctors will often perform ultrasounds on the baby’s kidneys and spine. Because the digestive tract develops at the same time as these other organs, structural differences can sometimes happen together [12]. While it can be frightening to hear about more testing, these are standard screening tools. Your care team is simply ensuring they have a complete picture of your baby’s anatomy to provide the safest care.

Issues Nearby: Annular Pancreas and Malrotation

Sometimes the cause of the blockage is related to organs right next to the duodenum:

  • Annular Pancreas: This occurs when the pancreas (a gland that helps with digestion) grows in a ring around the duodenum, squeezing it shut [13][14].
  • Malrotation: This is when the intestines do not twist into the correct position during development. If this is present, the surgeon may perform a Ladd’s procedure during the same surgery to fix the positioning and prevent future blockages [15][16].

While the list of potential associations is long, remember that each baby is unique. These tests are simply the way your medical team “looks at the whole picture” to give your baby the best possible start.

Common questions in this guide

Is duodenal atresia linked to Down syndrome?
Yes, nearly one-third of babies born with duodenal atresia also have Down syndrome, also known as Trisomy 21. Because of this strong connection, doctors routinely recommend genetic screening to help the family and medical team plan for any additional support the child may need.
Why does my baby need an echocardiogram if the blockage is in the intestines?
An echocardiogram is standard because many infants with duodenal atresia also have congenital heart defects. This specialized heart ultrasound allows the surgical and anesthesia teams to confirm the baby's heart is stable enough to safely undergo surgery.
What other structural issues will doctors check for?
Doctors often perform ultrasounds to check the baby's kidneys and spine, as these organs develop at the same time as the digestive tract. They will also evaluate for nearby structural issues, such as an annular pancreas or intestinal malrotation.
What is an annular pancreas?
An annular pancreas happens when the pancreas grows in a ring around the duodenum, squeezing it shut. This structural difference can act as a physical blockade that prevents food from passing through the intestines.
How does malrotation affect duodenal atresia surgery?
Malrotation means the baby's intestines did not twist into the correct position during fetal development. If the surgeon finds malrotation during the operation, they can perform a Ladd's procedure to correct the placement and prevent future blockages.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.What specific heart defects are you looking for on the echocardiogram?
  2. 2.Will a genetic counselor be available to discuss screening results with us?
  3. 3.Will you be checking for malrotation or an annular pancreas during the surgery?
  4. 4.Does my baby need to see any other specialists, such as a kidney doctor, before the operation?

Questions For You

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

References

References (16)
  1. 1

    Clinical significance of prenatal double bubble sign on perinatal outcome and literature review.

    Demirci O, Eriç Özdemir M, Kumru P, Celayir A

    The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians 2022; (35(10)):1841-1847 doi:10.1080/14767058.2021.1874338.

    PMID: 33455511
  2. 2

    Clinical outcome of pregnancies with the prenatal double bubble sign - a five-year experience from one single centre in mainland China.

    Yang Y, He P, Li DZ

    Journal of obstetrics and gynaecology : the journal of the Institute of Obstetrics and Gynaecology 2018; (38(2)):206-209 doi:10.1080/01443615.2017.1342230.

    PMID: 28880692
  3. 3

    Duodenal atresia with apple peel associated with congenital diaphragmatic hernia: an exceptional case and a literature review.

    Molino Gahete JA, López Fernández S, Oliver B, et al.

    Cirugia pediatrica : organo oficial de la Sociedad Espanola de Cirugia Pediatrica 2022; (35(1)):31-35 doi:10.54847/cp.2022.01.16.

    PMID: 35037438
  4. 4

    Microarray analysis in fetuses with duodenal obstruction: It is not just trisomy 21.

    Zhang W, Lei T, Fu F, et al.

    Prenatal diagnosis 2021; (41(3)):316-322 doi:10.1002/pd.5834.

    PMID: 33000500
  5. 5

    Congenital Duodenal Obstruction in Neonates: Over 13 Years' Experience from a Single Centre.

    Kumar P, Kumar C, Pandey PR, Sarin YK

    Journal of neonatal surgery 2016; (5(4)):50 doi:10.21699/jns.v5i4.461.

    PMID: 27896158
  6. 6

    Chromosomal Abnormalities and Pregnancy Outcomes for Fetuses With Gastrointestinal Tract Obstructions.

    Wu X, Su L, Shen Q, et al.

    Frontiers in pediatrics 2022; (10()):918130 doi:10.3389/fped.2022.918130.

    PMID: 35783302
  7. 7

    Prenatal Diagnosis of Recurrent Distal 1q21.1 Duplication in Three Fetuses With Ultrasound Anomalies.

    Ji X, Pan Q, Wang Y, et al.

    Frontiers in genetics 2018; (9()):275 doi:10.3389/fgene.2018.00275.

    PMID: 30177949
  8. 8

    Association of Duodenal Atresia, Malrotation, and Atrial Septal Defect in a Down-Syndrome Patient.

    Angotti R, Molinaro F, Sica M, et al.

    APSP journal of case reports 2016; (7(2)):16.

    PMID: 27170921
  9. 9

    Preduodenal Portal Vein with Situs Inversus Totalis causing Duodenal Obstruction.

    D'souza F, Nage A, Bendre P

    APSP journal of case reports 2016; (7(3)):24 doi:10.21699/ajcr.v7i3.435.

    PMID: 27398325
  10. 10

    Alveolar capillary dysplasia with misalignment of the pulmonary veins and hypoplastic left heart sequence caused by an in frame deletion within FOXF1.

    Bourque DK, Fonseca IC, Staines A, et al.

    American journal of medical genetics. Part A 2019; (179(7)):1325-1329 doi:10.1002/ajmg.a.61162.

    PMID: 31074124
  11. 11

    [Congenital heart disease associated with the most prevalent chromosomal syndromes: a literature review].

    Castillo Lam JE, Elías Adauto OE, Huamán Benancio GP

    Archivos peruanos de cardiologia y cirugia cardiovascular 2021; (2(3)):187-195 doi:10.47487/apcyccv.v2i3.155.

    PMID: 37727523
  12. 12

    HSPA6: A new autosomal recessive candidate gene for the VATER/VACTERL malformation spectrum.

    Kause F, Zhang R, Ludwig M, et al.

    Birth defects research 2019; (111(10)):591-597 doi:10.1002/bdr2.1493.

    PMID: 30887706
  13. 13

    Annular pancreas in neonates; Case series and review of literatures.

    Ali Almoamin HH, Kadhem SH, Saleh AM

    African journal of paediatric surgery : AJPS 2022; (19(2)):97-101 doi:10.4103/ajps.AJPS_180_20.

    PMID: 35017379
  14. 14

    Annular pancreas: Radiological features of a rare case of infantile vomiting.

    Bennani H, Azzabi S, Bouardi NE, et al.

    Radiology case reports 2022; (17(11)):4449-4452 doi:10.1016/j.radcr.2022.08.063.

    PMID: 36188077
  15. 15

    Double Whammy: Duodenal Stenosis and Gastrointestinal Malrotation.

    Mustaqim K, Mohd Shah MS, Muhammad Asri NA

    Cureus 2023; (15(3)):e36137 doi:10.7759/cureus.36137.

    PMID: 37065346
  16. 16

    Double Duodenal Atresia: An Extremely Rare Presentation of Duodenal Obstruction.

    Singh G, Pandey A, Verma AK, Gupta A

    Journal of paediatrics and child health 2018; (54(1)):106-107 doi:10.1111/jpc.13783.

    PMID: 29314383

This page provides educational information about conditions associated with duodenal atresia. It does not replace professional medical advice or personalized genetic counseling from your child's pediatric care team.

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