Clinicopathological aspects of Chediak-Higashi syndrome in the accelerated phase.

This report describes clinical and laboratory features of a case of Chediak-Higashi syndrome that presented in the accelerated phase of the disorder. This female infant presented with a fever, marked neutropenia, large cytoplasmic granules in leukocytes and a constellation of features that suggested a virus-associated hemophagocytic syndrome. The clinical course was marked by limited response to the therapeutic agents that included ascorbate, cytotoxic agents and granulocyte colony-stimulating factor.