[Langerhans cell granulomatosis of the lung (morphological studies of lung biopsy specimens from patient with histiocytosis X].

Morphologic studies, including conventional histology, electronmicroscopy and immunohistochemistry were performed on biopsies from 5 patients with pulmonary Langerhans's cell granulomatosis (LCG). In all cases we were able to identify the CD la antigen on paraffin section supporting the diagnosis of LCG.