Preoperative diagnosis of Meckel's diverticulum in a 62-year-old man: utility of an angiographic technique.

A 62-year-old man with severe anal bleeding was admitted to our ward as an emergency patient. Angiography of the superior mesenteric artery revealed an omphalomesenteric artery. Methylene blue was injected superselectively into the artery through an angiographic catheter at the time of subsequent laparotomy. Blood supply through the artery to the restricted area of the diverticulum could thus be defined in situ.