Hepatic uptake of Tc-99m MDP on bone scintigraphy from intravenous iron therapy (Blutal)

Two patients with hypochromic microcystic anemia received intravenous iron therapy (Blutal, Yuham Co., An Yang, Korea). These patients demonstrated diffuse hepatic uptake of Tc-99m MDP on bone scintigraphy, which was performed for evaluation of lower back pain in one patient and to rule out skeletal metastases from gastric cancer in the other patient. Blutal is an iron colloid chondroitin sulfate complex and is used to treat iron deficiency anemia in Korea. Phagocytized iron colloid within the hepatic reticuloendothelial system is responsible for the hepatic uptake of Tc-99m phosphate in the two presented cases.