title: Diagnosis of Meckel diverticulum by sodium pertechnetate Tc 99m scan.
abstract: 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.
mesh_terms: D006470:Hemorrhage / Q000209:etiology; D006801:Humans; D008297:Male; D008467:Meckel Diverticulum / Q000150:complications / Q000175:diagnosis*; D011877:Radionuclide Imaging; D012002:Rectal Diseases / Q000209:etiology; D013667:Technetium
chemical_list: D013667:Technetium