H epatic venous outflow obstruction is uncommonly reported in children (1). Although it is a rare disease in populations with a high standard of living, it is a leading cause for liver-related hospital admission in others with a lower standard of living (2). Hepatic venous outflow obstruction may run an acute, chronic, or fulminant course. Although commonly manifested by abdominal pain, ascites, and hepatosplenomegaly, cases have been reported in which there was a complete absence of symptoms, this being strongly associated with large hepatic vein collaterals (3). The syndrome is caused by a wide variety of conditions, including congenital or acquired inferior vena caval webs, thrombotic, inflammatory, or neoplastic disorders (4).Churg-Strauss syndrome (CSS) is characterized by eosinophilia and systemic vasculitis and occurs in patients affected by asthma and allergic rhinitis (5). In 1990, the American College of Rheumatology developed diagnostic criteria for the syndrome, namely moderate to severe asthma, peripheral blood eosinophilia (>10%), mono-or polyneuropathy, nonfixed pulmonary infiltrates, paranasal sinus abnormality, and histological proof of vasculitis with extravascular eosinophilia. The presence of at least 4 of these criteria is required for diagnosis (6). Epidemiological association of CSS with the use of antileukotrienes suggested the possibility that, in some instances, CSS may be a drug-induced illness (7).