- Large cleaved and immunoblastic lymphoma may represent two distinct clinicopathologic entities within the group of diffuse large B-cell lymphomas. De Paepe, P., Achten, R., Verhoef, G., Wlodarska, I., Stul, M., Vanhentenrijk, V., Praet, M., De Wolf-Peeters, C. J. Clin. Oncol. (2005)