Acute hemolytic anemia as an initial clinical manifestation of Wilson's disease.

Wilson's disease is an inherited disorder of copper transport in the organism, transmitted in autosomal recessive fashion. It is caused by dysfunction in homologous copper-transporting adenosine triphosphatases. The main clinical symptoms are usually due to hepatic (42%) or/and neurologic (34%) involvement, which is the reason for the name hepatolenticular degeneration. Described in this report are four cases--the first three demonstrate an unusual form of manifestation of Wilson's disease in clinical practice--glucose-6-phosphate dehydrogenase deficiency hemolytic anemia. The fourth case concerns acute intravascular hemolysis that was provoked by the disease and presented without erythrocyte enzyme disturbances. Hemolytic anemia is a recognized but rare (10-15%) complication of the disease. Most often Coombs' negative acute intravascular hemolysis occurs as a consequence of oxidative damage to the erythrocytes by the higher copper concentration. A literature review with discussion of the possible mechanisms for the development of this phenomenon is done.