Difficulty in identifying a bleeding Meckel's diverticulum: case report and review of the literature.

Meckel's diverticulum is the most commonly occurring congenital anomaly of the gastrointestinal tract. Diagnosis is usually made by scintigraphy using 99Tc(m) pertechnetate, with low accuracy in adults. We describe a case report and review the literature for difficulties in identifying a recurrent bleeding Meckel's diverticulum. Our patient had a "bladder diverticulum" on scintigraphy, which led to delay in diagnosis. The use of bladder lavage during scintigraphy may assist in distinguishing a Meckel's diverticulum from a bladder diverticulum.