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(A) A 60-y-old patient with luminal B (HER-2–negative) breast cancer (blue arrows) and axillary lymph node metastasis (red arrows) showing intense 18F-alfatide II uptake but no 18F-FDG uptake. (B) A 54-y-old patient with luminal A (HER-2–negative) breast cancer (blue arrows) showing increased 18F-alfatide II uptake, but no 18F-FDG uptake, and distant metastases with larger numbers and more intense uptake (green arrows) by 18F-alfatide II than by 18F-FDG.
