title: Diagnosis of histiocytosis X.
mesh_terms: D001706:Biopsy / Q000379:methods; D006646:Histiocytosis, Langerhans-Cell / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D002479:Inclusion Bodies / Q000648:ultrastructure; D008168:Lung / Q000648:ultrastructure*