[Radiologic manifestations of histiocytosis in childhood]

The radiologic changes that ocurred in 37 cases of histiocytosis are reported. According to established clinical types, they are grouped and analyzed stressing in bone lesions their aspect, characteristics and distribution, together with the evident differential diagnosis and the X-ray guideline to be followed to determine the course. The importance of plain X-ray is stressed and other less frequent changes are mentioned in those cases with diagnostic problems.