Severe macrophage activation syndrome is associated with acute HAV infection-a very rare case report

Macrophage activation syndrome (MAS) is a life-threatening complication of rheumatic disease that, for unknown reasons, occurs much more frequently in individuals with systemic juvenile idiopathic arthritis (SJIA) and in those with adult-onset Still disease. Macrophage activation syndrome is characterized by pancytopenia, liver insufficiency, coagulopathy, and neurologic symptoms and is thought to be caused by the activation and uncontrolled proliferation of T lymphocytes and well-differentiated macrophages, leading to widespread hemophagocytosis and cytokine overproduction. We treated a young man who had severe form of Macrophage activation syndrome which was associated with acute HAV infection .This kind of severe complication in acute HAV infection has not yet been reported in the literature.