Severe upper gastrointestinal bleeding in extraluminal diverticula in the third part of the duodenum

The successful management of upper gastrointestinal (GI) bleeding requires identification of the source of bleeding and when this is achieved the bleeding can often be treated endoscopically. However, the identification of the bleeding can be challenging due to the location of the bleeding or technical aspects. Therefore it might be necessary to use other measures than endoscopy such as CT angiography. Duodenal diverticula is a rare cause of upper GI bleeding and can be challenging to diagnose as they often require specialised endoscopy procedures such as endoscopy with a side-viewing scope. This case describes the first successful management of this rare condition with an upper GI endoscopy with a colonoscope and afterwards intravascular coiling.