label: Diffuse Large B-Cell Lymphoma
label_lc: diffuse large b-cell lymphoma
description: A non-Hodgkin lymphoma characterized by a diffuse proliferation of predominantly large neoplastic B lymphocytes.  It is the most frequently seen type of non-Hodgkin lymphoma, representing 30%-40% of the cases.  Morphologic variants include centroblastic lymphoma, immunoblastic lymphoma, and anaplastic lymphoma.  Subtypes/entities include T-cell/histiocyte rich large B-cell lymphoma, primary diffuse large B-cell lymphoma of the central nervous system, plasmablastic lymphoma, primary cutaneous diffuse large B-cell lymphoma, leg type, and ALK-positive large B-cell lymphoma.