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  • Title: Abdominal scanning using autologous human red blood cells labeled with Tc-99m: detection of a horseshoe kidney.
    Author: Morita S, Ishibashi M, Hirayama T, Kumabe T, Komura J, Yano H, Ohtake H.
    Journal: Kurume Med J; 1990; 37(1):45-7. PubMed ID: 2214678.
    Abstract:
    A horseshoe kidney was incidentally diagnosed while performing an abdominal scan using autologous human red blood cells labeled with Tc-99m (Tc-99m RBC) on a patient with suspected gastrointestinal bleeding. This patient repeatedly tested positive on occult blood stool examinations. In the first scintigram, an increase in well-defined activity was found on the right side under the liver. This could have been caused either by bleeding of the gastric antrum or the duodenal bulb. A second abdominal scan with Tc-99m RBC revealed faint radionuclide accumulation in the shape of a horseshoe with symmetrical, well-defined activity. However, the well-defined activity decreased with time on both images, and on this basis a horseshoe kidney was diagnosed.
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