title: Recurrent gastrointestinal bleeding diagnosed by delayed scintigraphy with Tc-99m-labeled red blood cells.
abstract: A 56-year-old woman presented with bright-red blood from the rectum. Esophagogastroduodenoscopy revealed mild gastritis. Colonoscopy demonstrated diverticulosis without active bleeding, and in vitro tagged red blood cell scintigraphy was unremarkable. There was no further evidence of bleeding and the patient was discharged home. The patient returned with recurrent bright-red blood from the rectum. Although delayed scintigraphic images seldom demonstrate the site of bleeding, delayed images at 12 hours demonstrated active bleeding near the hepatic flexure in this patient. This was confirmed with selective mesenteric angiography, and was treated with coil embolization of the tertiary branches of the right middle colic artery.
authors.affiliation: Department of Surgery, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA.
authors.forename: Lois
authors.initials: L
authors.lastname: Nwakanma
authors.forename: Gary
authors.initials: G
authors.lastname: Meyerrose
authors.forename: Shalyn
authors.initials: S
authors.lastname: Kennedy
authors.forename: Ariwan
authors.initials: A
authors.lastname: Rakvit
authors.forename: Todd
authors.initials: T
authors.lastname: Bohannon
authors.forename: Micheal
authors.initials: M
authors.lastname: Silva
mesh_terms: D003106:Colon / Q000098:blood supply / Q000000981:diagnostic imaging; D004912:Erythrocytes / Q000000981:diagnostic imaging*; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis / Q000000981:diagnostic imaging*; D006801:Humans; D008875:Middle Aged; D011865:Radioisotope Dilution Technique; D019275:Radiopharmaceuticals; D012002:Rectal Diseases / Q000000981:diagnostic imaging*; D012008:Recurrence; D013667:Technetium; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods*
chemical_list: D019275:Radiopharmaceuticals; D013667:Technetium