CXCR4 and Miyoshi myopathy: The sensitivity of the [68Ga]Pentixafor probe for detecting BM infiltration that is not clearly evident as lytic bone lesions is exemplified in a CXCR4-PET-positive patient, where the [68Ga]Pentixafor PET showed visual positivity corresponding well to intramedullary MM infiltration revealed by MRI (Fig5A–C).