It is typically associated with abnormal embryological development, however adult cases can develop. It can result from growth of a bifid ventral<unk> ic bud around the duodenum, where the parts of the bifid ventral bud fuse with the dorsal bud, forming a<unk> ic ring. It can also result if the ventral<unk> ic bud fails to fully rotate, so it remains on the right or if the dorsal bud rotates in the wrong direction, such that the duodenum is surrounded by<unk> ic tissue. Blockage of the duodenum develops if inflammation <unk> itis) develops in the<unk> .
Annular pancreas
Duodenal atresia
Accessory pancreas
Ectopic pancreas
Pancreas divisum
Choledochal cysts
Pancreatic cyst
Porcelain gallbladder