A predominant pelvic gastrointestinal stromal tumor (GIST) mass observed on Tc-99m red blood cell gastrointestinal bleeding scintigraphy

Clin Nucl Med. 2011 Aug;36(8):e93-5. doi: 10.1097/RLU.0b013e318217af35.


A 51-year-old woman presented with recurrent bleeding per rectum. Her earlier endoscopies were negative. Tc-99m RBC GI bleeding scintigraphy was performed. It demonstrated an apparent hypervascular pelvic mass, and active small bowel bleeding. Based on scintigraphic finding of a predominant pelvic mass indicating tumor, CT of the abdomen and pelvis was performed for further gastrointestinal bleeding localization work up instead of an invasive angiography or endoscopy, which detected a small bowel tumor in the pelvis. A small bowel gastrointestinal stromal tumor was resected subsequently.

Publication types

  • Case Reports

MeSH terms

  • Erythrocytes / diagnostic imaging*
  • Female
  • Gastrointestinal Stromal Tumors / blood*
  • Gastrointestinal Stromal Tumors / diagnostic imaging*
  • Gastrointestinal Stromal Tumors / pathology
  • Gastrointestinal Stromal Tumors / physiopathology
  • Hemorrhage / diagnostic imaging*
  • Humans
  • Middle Aged
  • Organotechnetium Compounds*
  • Pelvis / diagnostic imaging
  • Pelvis / pathology*
  • Pelvis / physiopathology*
  • Radionuclide Imaging


  • Organotechnetium Compounds