Recurrent Gastrointestinal Bleeding Diagnosed by Delayed Scintigraphy with Tc-99m-Labeled Red Blood Cells

Lois Nwakanma, Gary Meyerrose, Shalyn Kennedy, Ariwan Rakvit, Todd Bohannon, Michael Silva

Research output: Contribution to journalArticle

6 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)691-693
Number of pages3
JournalClinical Nuclear Medicine
Issue number8
StatePublished - Jan 1 2003
Externally publishedYes



  • Angiography
  • Delayed scintigraphy
  • Gastrointestinal bleeding
  • Tc-99m-labeled red blood cells

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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