CXCR4 and marginal zone lymphoma: As [18F]FDG has limited sensitivity in the staging of MZL [1], an additional C-X-C motif chemokine receptor 4 (CXCR4)-directed PET/CT scan using [68Ga]Ga-PentixaFor ([68Ga]Ga-CPCR4.2) was performed, given that CXCR4 is overexpressed by most B- and T-cell neoplasms [2, 3].