Meckel diverticulum was diagnosed preoperatively as the cause of recurrent rectal bleeding in a 2-year-old child by means of a sodium pertechnetate Tc 99m scan. Although false-negative scans have been reported to occur in approximately 50% of all cases of Meckel diverticulum, the procedure should be considered in any case of unexplained, painless rectal bleeding, especially in pediatric patients.
(JAMA 235:1471-1472, 1976)
Cooper M. Diagnosis of Meckel Diverticulum by Sodium Pertechnetate Tc 99m Scan. JAMA. 1976;235(14):1471-1472. doi:10.1001/jama.1976.03260400037026