[Urinary tract obstruction and histiocytosis X : a report on 3 cases (author's transl)].

Three cases of histiocytosis X are reported in which urographic modifications suggested the presence of an obstruction. Similar cases do not appear to have been described in the published literature, and renal changes previously reported as occurring during histiocytosis X affections have all been based on autopsy findings. The possible role of diabetes insipidus in the dilatation of the excretory cavities is also envisaged.