Microscopically, samples from the adrenal tumor revealed diffuse large B cell lymphoma (DLBCL) with the following immunophenotype: CD20(+), CD45(+), CD3(−), Ki67-50 %, CD5(−), CD10(−), BCL6(−), MUM1(−), and cyclin D1(−) (Fig. 2). This evidence concerns the gene MKI67 and diffuse large B-cell lymphoma.