title: Case of the season. Diagnosis: histiocytosis X of the central nervous system.
mesh_terms: D001927:Brain Diseases / Q000000981:diagnostic imaging*; D002675:Child, Preschool; D005260:Female; D006646:Histiocytosis, Langerhans-Cell / Q000000981:diagnostic imaging*; D006801:Humans; D014057:Tomography, X-Ray Computed