MYC and diffuse large B-cell lymphoma: COO and MYC/BCL2 double expression are two crucial prognostic factors in DLBCL thatare recommended in the routine evaluation and reporting of this lymphoma.14,26 Therefore, our aim in this study was to determine theprevalence of MYC/BCL2 double expression among cases of DLBCL diagnosed at Aga KhanUniversity Hospital, Nairobi (AKUHN), and to classify cases of DLBCL by COO.