Obstruction of duodenum

**Definition:** Hindrance of the passage of luminal contents in the duodenum. Obstruction of duodenum can be partial or complete, and caused by intrinsic or extrinsic factors. Simple obstruction is associated with diminished or stopped flow of luminal contents. Strangulating obstruction is associated with impaired blood flow to the duodenum in addition to obstructed flow of luminal contents.

**Exclusions:** - congenital stenosis of duodenum