Scintigraphic detection of an occult bleed into a retroperitoneal mass using Tc-99m labeled red blood cells

Clin Nucl Med. 1997 Nov;22(11):765-7. doi: 10.1097/00003072-199711000-00007.


A 45-year-old man with chronic lymphocytic leukemia and a retroperitoneal mass underwent Tc-99m labeled red blood cell bleeding imaging to localize a bleeding source. The bleeding scan showed a linear accumulation of radiotracer obliquely oriented along the left upper epigastrium to the right midepigastrium. This area of uptake increased in intensity and assumed a more globular appearance throughout the study, but did not change in location. This is the pattern of a retroperitoneal bleed resulting from active hemorrhage into the retroperitoneal mass.

Publication types

  • Case Reports

MeSH terms

  • Erythrocytes*
  • Hemorrhage / complications
  • Hemorrhage / diagnostic imaging*
  • Humans
  • Leukemia, Lymphocytic, Chronic, B-Cell / complications
  • Male
  • Middle Aged
  • Radionuclide Imaging
  • Retroperitoneal Space / diagnostic imaging*
  • Technetium*


  • Technetium