title: Ileal leiomyosarcoma and leiomyoma. False-positive scintiscans for Meckel's diverticulum.
abstract: Two cases of ileal leiomyomatous neoplasms with positive scintigraphic findings for Meckel's diverticulum are presented. The precise mechanism for the abnormal concentration of the Tc-99m pertechnetate is uncertain. Illustrations of the collating barium and computerized tomographic studies are included and the scanning technique utilized is reviewed.
mesh_terms: D003937:Diagnosis, Differential; D005189:False Positive Reactions; D006801:Humans; D007078:Ileal Neoplasms / Q000000981:diagnostic imaging*; D007889:Leiomyoma / Q000000981:diagnostic imaging*; D007890:Leiomyosarcoma / Q000000981:diagnostic imaging*; D008297:Male; D008467:Meckel Diverticulum / Q000000981:diagnostic imaging*; D008875:Middle Aged; D011877:Radionuclide Imaging; D013670:Sodium Pertechnetate Tc 99m; D013671:Technetium Tc 99m Sulfur Colloid; D014057:Tomography, X-Ray Computed
chemical_list: D013671:Technetium Tc 99m Sulfur Colloid; D013670:Sodium Pertechnetate Tc 99m