Haemophagocytic Lymphohistiocytosis in an Elderly Patient after Recent Cardiac Surgery.

A 70-year-old Caucasian man was admitted to hospital from a convalescence center with symptoms of fatigue, fever, decreased oral intake, and increasing shortness of breath on exertion. The patient was three weeks after coronary artery bypass grafting. Over the next two weeks, the patient continued to deteriorate both clinically and biochemically. The patient met criteria for haemophagocytic lymphohistiocytosis, likely driven by EBV infection. Bone marrow biopsy supported the diagnosis with evidence of active phagocytosis. The patient was commenced on high-dose dexamethasone and reviewed by haematology with further molecular testing confirming the diagnosis. Discussion. LH is becoming more common in older patients. We propose that new guidelines be developed to aid its prompt diagnosis in this age group.