Solitary eosinophilic granuloma of the radius. An unusual differential diagnosis.

A case of an 11-year-old patient with a lesion in the proximal metaphyseo-diaphyseal region of the right radius is presented. The clinico-radiological suspicion was either infection or tumour of the proximal radius. Subsequently, a biopsy proved the lesion to be an eosinophilic granuloma of bone. Following curettage and after a follow-up of two years, there was complete resolution of the lesion with restitution of the cortex.