Bleeding Meckel's diverticulum in an adult.

The 99mtechnetium pertechnetate nuclear red blood cell scan proved to be a valuable diagnostic tool in localizing the site of bleeding, from a Meckel's diverticulum, in a 41-year-old man. When peptic ulcer or colorectal disease has been excluded by panendoscopy, bleeding Meckel's diverticulum remains a diagnostic consideration, even in adults. We provide a 20-year list of bleeding Meckel's diverticula reported in adults, along with a brief discussion.