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FDG PET-CT scan selected axial slices, which demonstrate high grade FDG activity within a submental IA lymph node (A) and left level 2 lymph node (B) in a case of unknown primary cancer. A) Axial PET-CT imaging demonstrates high grade FDG activity within a submental 1A lymph node. B) Axial PET-CT imaging demonstrates high grade FDG activity within a left level 2 lymph node
