title: Value of CD-1-positive cells in bronchoalveolar lavage fluid for the diagnosis of pulmonary histiocytosis X.
abstract: Pulmonary histiocytosis X is characterized by an accumulation of CD-1-positive histiocytosis X cells in the lung, which also can be found in the bronchoalveolar lavage fluid (BALF). However, it has recently been demonstrated that CD-1-positive cells can also be detected in BALF of patients with other interstitial lung diseases and in healthy smokers. We therefore examined the frequency of CD-1-positive cells in a pool of patients with different pulmonary disorders, according to their smoking habits and diagnoses. We have studied the bronchoalveolar lavage in patients with pulmonary histiocytosis X (n = 6), sarcoidosis (n = 88), and in 97 patients with other miscellaneous lung disorders by using the immunoperoxidase method to detect CD-1-positive cells on glass slides. All patients with histologically proven histiocytosis X displayed more than 5% CD-1-positive cells, whereas patients with other pulmonary disorders showed no more than 3.6% CD-1-positive BAL cells. The dividing line of 5% CD-1-positive cells was not influenced by patients' smoking habits. The identification of CD-1-positive cells in BALF appears to be useful in diagnosing pulmonary histiocytosis X.
authors.affiliation: I. Medizinische Klinik, Klinikum der Christian-Albrecht-Universität Kiel, Germany.
authors.forename: U
authors.initials: U
authors.lastname: Auerswald
authors.forename: J
authors.initials: J
authors.lastname: Barth
authors.forename: H
authors.initials: H
authors.lastname: Magnussen
mesh_terms: D015703:Antigens, CD / Q000032:analysis*; D001992:Bronchoalveolar Lavage Fluid / Q000166:cytology*; D006646:Histiocytosis, Langerhans-Cell / Q000175:diagnosis* / Q000276:immunology; D006801:Humans; D007124:Immunoenzyme Techniques; D008171:Lung Diseases / Q000175:diagnosis* / Q000276:immunology; D012507:Sarcoidosis / Q000175:diagnosis / Q000276:immunology; D012907:Smoking / Q000276:immunology
chemical_list: D015703:Antigens, CD