Arterial supply to the bleeding diverticulum in the ascending duodenum treated by transcatheter arterial embolization- a duodenal artery branched from the inferior pancreaticoduodenal artery.

We present a case of endoscopically unmanageable hemorrhagic diverticulum in the ascending duodenum. The ventral and dorsal walls of the ascending duodenum were supplied from the first jejunal artery (1JA) and inferior pancreaticoduodenal artery (IPDA), respectively. The hemorrhage mainly occurred from IPDA. The abruptly branching of IPDA from superior mesenteric artery enabled successful catheterization of the IPDA with an angled microcatheter. Hemostasis was obtained by embolization using n-butyl cyanoacrylate. Gastroendoscopy depicted a duodenal hemi-circumferential ulcer. No symptoms related to hemorrhage were found at the last follow-up at 12 months.