[11] As defined, this category includes cases that morphologically resemble BL but exhibit atypical immunophenotypic or genetic profile, and cases with morphologic features overlapping BL and DBLCL but exhibit a phenotypic or genetic profile compatible with BL. At this time, this category does not include cases of morphologically typical DLBCL and have a MYC- rearrangement. This evidence concerns the gene MYC and Burkitt lymphoma.