title: Gastrointestinal bleeding: an accessory spleen causing a false-positive Tc-99m-sulfur colloid study.
abstract: A Tc-99m-sulfur colloid abdominal scan was performed on a 12-year-old girl to localize the site of gastrointestinal bleeding. The study was normal. When bleeding recurred two weeks later, a repeat study revealed a focal abnormality in the upper abdomen. This was thought to be compatible with a small bleed. However, at surgery an accessory spleen was found, accounting for the abnormal scan.
mesh_terms: D002648:Child; D005189:False Positive Reactions; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000150:complications / Q000000981:diagnostic imaging*; D006801:Humans; D011877:Radionuclide Imaging; D013154:Spleen / Q000002:abnormalities*; D013455:Sulfur; D013667:Technetium; D013671:Technetium Tc 99m Sulfur Colloid
chemical_list: D013671:Technetium Tc 99m Sulfur Colloid; D013455:Sulfur; D013667:Technetium