CXCR4 and marginal zone lymphoma: Among those patients, MZL appears to be one of the most promising subgroups for chemokine receptor-directed imaging [2], as this lymphoma subtype provided high CXCR4 levels on immunohistochemical assessment [1] and substantially high radiotracer accumulation in patients imaged with CXCR4-targeted [68 Ga]Ga-PentixaFor [5].