Transient lymphoblastosis and thrombocytopenia in Gianotti-Crosti syndrome.

Gianotti-Crosti Syndrome, or papular acrodermatitis of childhood, represents a characteristic rash that is irregularly associated with hepatitis B infection. The authors report papular acrodermatitis in a 10-month-old child with leukopenia, thrombocytopenia, circulating lymphoblasts, and acute anicteric hepatitis B. Physical examination revealed a densely distributed papular rash on the patient's extremities and face and neck, but not on his trunk, buttocks, palms, or soles. Laboratory investigation revealed a normal bone marrow and positive hepatitis B serology. This case reinforces the fact that hematologic findings should not dissuade the work-up of papular acrodermatitis for hepatitis B or other less commonly associated viruses.