Hemophagocytic Lymphohistiocytosis in Association With Clostridium difficile Infection and Cutaneous T-Cell Lymphoma.

Hemophagocytic lymphohistiocytosis (HLH) or Macrophage Activation Syndrome (MAS) is a potentially life threatening disorder that presents with fever, suppressed blood cell counts, hepatosplenomegaly and multi-organ failure. HLH has been reported in association with genetic mutations, infections, autoimmune disorders, and various malignancies. However to the best of our knowledge, HLH in association with Clostridium difficile infection has never been reported. We present a case of HLH in a patient with Epstein-Barr virus (EBV) positive natural killer T (NKT) cell cutaneous lymphoma and active Clostridium difficile infection. A 35-year-old male with recently diagnosed EBV positive NKT cell lymphoma was admitted for Clostridium difficile associated diarrhea. During the course of hospitalization he gradually developed pancytopenia and multi-organ failure leading to death. Post-mortem examination confirmed the diagnosis of hemophagocytic lymphohistiocytosis.