Correct Answer � C Explanation

Answer C) Annular pancreas

Explanation:

Annular Pancreas

• Embryologic deformity of the pancreas 

• Pancreas normally develops from one dorsal and two ventral buds

• Ventral buds normally rotate with duodenum, but if they fail to do so, annular pancreas may form 

• Three theories to explain this:

• Adherence of the ventral bud to the duodenal wall prior to rotation, resulting in its persistence and encirclement of the duodenum (Lecco’s theory).

• Persistence and enlargement of the left ventral bud (Baldwin’s theory).

• Hypertrophy and fusion of the ventral and dorsal buds before rotation of the gut, resulting in complete encirclement of the duodenum