Intense 99mTc-MDP and 18F-NaF Activity in Long-standing Subcutaneous Implants

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A 64-year-old woman with a newly diagnosed left breast cancer underwent a presurgical 99mTc-MDP whole-body imaging, which showed 1 intense activity in the midline upper abdomen and another overlapping the upper thoracic spine. An 18F-NaF PET/CT scan performed a day later also revealed the elevated activity in the same regions. The activity corresponded to calcified subcutaneous implants, which were placed there more than 30 years ago.

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