Hemophagocytic Lymphohistiocytosis Secondary to T Cell/Histiocyte-rich Large B Cell Lymphoma in an Adolescent Male.

Hemophagocytic Lymphohistiocytosis (HLH) is a hyperinflammatory disorder that may be encountered as a primary or secondary phenomenon. HLH secondary to lymphoma has been described, more frequently in adults than in children. T-cell/Histiocyte-rich B-cell lymphoma (THRLBCL) is a large B-cell lymphoma that resides in a microenvironment of robust host immune response and has previously been associated with HLH in adults. Here, we describe the first case of HLH secondary to THRLBCL in an adolescent patient.