Scintigraphy of abdominal masses with ⁹⁹(m)Tc-labeled red blood cells

Scintigraphy with (99m)Tc-labeled red blood cells was performed in five patients for demonstration of normal anatomy and in 18 patients for evaluation of suspected or apparent space-occupying abdominal lesions. In 14 cases of abdominal lesions, the study demonstrated the extent, vascularity, and relation of the lesion to neighboring organs. We found the method was primarily useful for evaluating cases of retroperitoneal tumor and vascular malformation.