Primary Neuroblastoma Uptake in 99mTechnetium Methylene Diphosphonate Bone Scan ( 2 Cases )

Although the exact mechanism is not clearly understood yet, there were examples of the uptake of radiopharmaceuticals to the soft tissue lesions with Technetium methylene diphosphonate bone scan. Recently, v,e experienced two cases of neuroblastoma of which primary sites were imaged with 99mTc-MDP bone scan preoperatively and could make the diagnosis. So, we report here that 99mTc-MDP bone scan is the reasonable method not on]y to find out the bone metastasis, but also to diagnose the neuroblastoina preoperatively.