[Histiocytosis X in the field of otorhinolaryngology]

This is a report on five cases of histiocytosis x with manifestations in ENT. Based on our own experience and reports in the literature the recommendation is given to search for further foci of the disease even in the case of an eosinophilic granuloma, which is generally presumed to be unilocular. Therapeutic steps should be taken only after having established thorough staging.