Annular pancreas

Description

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.

Index terms

Annular pancreas
Pancreas annulare
congenital annular pancreas

Exclusions from above levels

http://id.who.int/icd/entity/733825440 – Inborn errors of metabolism

Sibling codes

LB21.1 – Pancreas divisum
LB21.2 – Accessory pancreas
LB21.3 – Agenesis-aplasia of pancreas
LB21.4 – Partial agenesis of pancreas
LB21.5 – Hypoplasia of pancreas
LB21.Y – Other specified structural developmental anomalies of pancreas
LB21.Z – Structural developmental anomalies of pancreas, unspecified

Foundation entity

Annular pancreas – http://id.who.int/icd/entity/1311285827

Part of: LB21: Structural developmental anomalies of pancreas › 20: Developmental anomalies