Ischaemia in the small bowel can present as an acute surgical emergency or more insidiously with relatively non-specific symptoms. Acute small bowel ischaemia is associated with a mortality rate of 60–80%. While other more common causes of abdominal pain should be excluded, a high index of clinical suspicion is needed. Cross-sectioning imaging with CT scanning is sensitive and specific for making the diagnosis. Prompt intervention (revascularization) is needed to restore mesenteric blood flow in order to prevent bowel necrosis and sepsis.