[Splenomegaly and failure to thrive as a result of Gaucher disease].

Gaucher disease (GD) is the most common lysosomal storage disease with a prevalence of 1:75,000. The disease is caused by a defiency of the lysosomal enzyme glucocerebrosidase which leads to an accumulation of the substrate glycosylceramide within macrophages. GD presents with a wide spectrum of symptoms but involvement of the bones, bone marrow and spleen or liver is seen in the majority of patients. We present the case of a ten-year-old girl with massive splenomegaly, cytopenia, poor growth, learning difficulties and extreme fatigue for several years.