“…The nodules can be surrounded by mantle zones, or mantle zones can be absent [19,20,23,26,30]. The nodules can be sharply demarcated [16,21,24,25,28]. In PTGC-like cases, representing approximately 50% of all FTCL cases, the tumor cells form large irregular or vague nodules that mimic progressively transformed germinal centers or nodules of nodular lymphocyte predominance Hodgkin lymphoma [13,16,17,21,22,24,25,27,28].…”