ArticleEuropean radiology2019
Diagnostic value of the acute angle between the prestenotic and poststenotic duodenum in neonatal annular pancreas.
Article in European radiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 14 citations in OpenAlex.
- Annular Pancreas: Insights Into the Diagnosis of a Rare Anatomical Malformation in Pediatric Patients.Cureus · 2025Article
- Ultrasound imaging of bowel obstruction in neonates.Journal of ultrasound · 2024Article
- Incidence and Clinical Implications of Anatomical Variations in the Pancreas and Its Ductal System: A Systematic Review and Meta-Analysis.Life (Basel, Switzerland) · 2023Review
- The value of saline-aided ultrasound in diagnosing congenital duodenal obstruction.Pediatric surgery international · 2020Article
- The application of prenatal ultrasound in the diagnosis of congenital duodenal obstruction.BMC pregnancy and childbirth · 2020Article
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
Abstract
objectivesTo analyze the ability of upper gastrointestinal (GI) saline-contrast ultrasound (US) to detect neonatal annular pancreas.
methodsSixty-two neonates, who presented duodenal obstruction and were examined by upper GI saline-contrast US before treatment, were retrospectively analyzed and categorized into four groups according to their final diagnosis: group A, annular pancreas (n = 28); group B, duodenal atresia (n = 2); group C, descending duodenal septum (n = 25); and group D, normal (n = 7). The ultrasonic characteristics were analyzed that especially focused on whether the angle between the prestenotic and poststenotic descending duodenum (at or below a derived cutoff) could identify neonatal annular pancreas.
resultsTo detect annular pancreas using the concave contour of the distal prestenotic duodenum, the sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were determined at 71.4%, 100%, 100%, and 80.9%, respectively. When using the hyperechogenic band around the constricted duodenum, the sensitivity, specificity, PPV, and NPV were determined at 82.1%, 94.1%, 92%, and 86.5%, respectively. For using the 40.7° acute angle cutoff between prestenotic and poststenotic descending duodenum, the values of sensitivity, specificity, PPV, and NPV were determined at 100%, 97.1%, 96.6%, and 100%, respectively, of which the area under the receiver operating characteristic curve was 0.979.
conclusionsUpper GI saline-contrast US has a lower possibility for misdiagnosis of neonatal annular pancreas when considering the acute angle between the prestenotic and poststenotic descending duodenum. KEY POINTS: • This study includes the largest series of neonates with annular pancreas of which the characteristics were analyzed using the upper GI saline-contrast US. • Neonatal annular pancreas may be diagnosed by the characteristics-concave contour of the distal prestenotic duodenum; acute angle cutoff of 40.7° between the prestenotic and poststenotic duodenum; the "S" shape formed by the pylorus, the duodenal bulb, and the prestenotic and poststenotic descending duodenum. • The acute angle with the highest diagnostic value can be used to quantitatively diagnose neonatal annular pancreas and avoid potential misdiagnosis caused by sonographers' subjectivity.
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