Peripheral T‐cell lymphoma presenting as hemophagocytic syndrome

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Abstract
Three patients with peripheral T‐cell lymphoma presenting with pyrexia, wasting, hepatosplenomegaly and pancytopenia in the absence of myelophthisic lymphomatous involvement are reported. Early in the course of the disease when there was no significant lymphadenopathy, these cases created enormous diagnostic confusion. Although the clinical features were suggestive of malignant histiocytosis (MH), marrow findings showed phagocytic histiocytes which did not appear atypical, and the criteria for diagnosis of MH could not be satisfied. Lymph node enlargement was detected only after 14, 5, and 8 weeks from the onset of symptoms, and the diagnosis of T‐lymphoma was then made on lymph node biopsies. Treatment with multiple agent chemotherapy was attempted. Two patients died 3 days and 11 weeks after treatment was started and the third was lost to follow‐up. In contrast with most of the cases reported in the literature, our cases show that a reactive hemophagocytic syndrome can be an early and prominent manifestation of an underlying T‐cell lymphoma. Differentiation from other causes of hemophagocytic syndrome can be difficult and lack of histological proof of malignancy in the initial stage often delays definitive diagnosis and treatment.