title: Nail pathology in histiocytosis X.
mesh_terms: D006646:Histiocytosis, Langerhans-Cell / Q000473:pathology*; D006801:Humans; D007223:Infant; D008297:Male; D009260:Nail Diseases / Q000473:pathology*; D009262:Nails / Q000473:pathology; D012871:Skin Diseases / Q000473:pathology*