The 2016 revised World Health Organization (WHO) classification includes several provisional borderline categories for lymphoma cases that do not clearly fit into one entity, such as B-cell lymphoma, unclassifiable (BCLU), with features intermediate between diffuse large B-cell lymphoma (DLBCL) and classical Hodgkin lymphoma (cHL). This CARD focuses on lymphomas that are intermediate between DLBCL of the primary mediastinal large B-cell lymphoma (PMLBCL) type and cHL....