CD5 and diffuse large B-cell lymphoma: When compared withCD5-neagative DLBCL, the subgroup of patients with CD5 positivity showed aggressiveclinical features, >1 performance status, higher lactate dehydrogenase (LDH), Bsymptoms, advanced stage at diagnosis, higher IPI, and with the involvement of morethan one extranodal sites with bone marrow involvement being more frequent.