ICD-11 definition : Annular pancreas is a distinct form of duodenal atresia in which the head of the pancreas
forms a ring around the second portion of the duodenum. During the neonatal period,
the clinical picture is dominated by epigastric distension with vomiting, which is
nonbilious as the obstruction is usually supra-vaterian. Chromosomal abnormalities
are present in one-third of cases of annular pancreas, with trisomy 21 (followed by
trisomy 18 and 13) being the most frequently detected anomaly. Annular pancreas is
an embryopathy resulting from an anomaly occurring early (towards the fourth week)
in development.;
Annular pancreas is a distinct form of duodenal atresia in which the head of the pancreas
forms a ring around the second portion of the duodenum. During the neonatal period,
the clinical picture is dominated by epigastric distension with vomiting, which is
nonbilious as the obstruction is usually supra-vaterian. Chromosomal abnormalities
are present in one-third of cases of annular pancreas, with trisomy 21 (followed by
trisomy 18 and 13) being the most frequently detected anomaly. Annular pancreas is
an embryopathy resulting from an anomaly occurring early (towards the fourth week)
in development.
Currated CISMeF NLP mapping