MKI67 and diffuse large B-cell lymphoma: Histopathological evaluation revealed that all cases were non-Hodgkin’s lymphomas There were 4 cases of DLBCL, 2 cases of high-grade B-cell lymphomas of Burkitt-like large cell type, and 1 case of low-grade B-cell follicular lymphoma (Figure 1). The proliferative index by Ki-67 in the DLBCL cases ranged between 50% and 70%.