Indium chloride (In-Cl) scintigraphy has been used to evaluate various hematological diseases for many years. However, there have been few reports on patients with bone marrow reconversion showing high uptake in In-Cl scintigraphy. Herein, we report a case of a 68-year-old man with esophageal cancer who underwent F-FDG PET/CT for staging of the disease. F-FDG PET/CT demonstrated high uptake in the first lumbar vertebral body, which was difficult to distinguish bone metastasis and bone marrow reconversion. In-Cl scintigraphy demonstrated specific findings with high uptake in the lesion, indicating bone marrow hyperplasia or reconversion.
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