Reactive haemophagocytic syndrome in a systemic lupus erythematosus patient: case report.

The macrophagic syndrome or reactive haemophagocytic syndrome (RHS) is a complication resulting from systemic inflammatory diseases and may also be related to malign neoplasias, immunodeficiencies and to a variety of infections caused by virus, bacteria, and fungus. It is characterized by an excessive activation of macrophages and histiocytes along with intense hemophagocytosis in bone marrow and reticulum-endothelial system, causing the phagocytosis of erythrocytes, leukocytes, platelets, and their precursors. The clinical manifestations are fever, hepatosplenomegaly, lymphadenomegalies, neurological involvement, variable degrees of cytopenias, hyperferritinemia, liver disorders, intravascular coagulation, and multiple organs failure.