[3 cases of histiocytosis X of the oral cavity].
D000328:Adult; D002675:Child, Preschool; D005260:Female; D005882:Gingival Diseases / Q000473:pathology; D006646:Histiocytosis, Langerhans-Cell / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009059:Mouth Diseases / Q000473:pathology*; D014456:Ulcer / Q000473:pathology