title: Bronchoalveolar lavage fluid profiles in sarcoidosis, tuberculosis, and non-Hodgkin's and Hodgkin's disease. An evaluation of differences.
abstract: The aim of this study was to identify characteristic features in bronchoalveolar lavage fluid (BALF) samples of patients with tuberculosis, non-Hodgkin's or Hodgkin's disease and to investigate whether these differences facilitate the distinction of those disorders from sarcoidosis presenting with a similar clinical picture. Nonsmoker patients with histologically verified sarcoidosis (n = 29), tuberculosis (n = 6) proven by positive culture, non-Hodgkin's disease, (n = 6) or Hodgkin's disease (n = 7), both histologically verified, were investigated by BAL. A control group consisted of subjects without any pulmonary history. The presence of CD4+ and CD8+ T lymphocytes, as well as the CD4/CD8 ratio in BALF, aided in the differentiation between the various groups. Patients with malignant lymphomas had the lowest CD4/CD8 ratio in BALF, as well as in peripheral blood, and occasionally, plasma cells were present in BALF samples. The most important feature of BALF analysis in tuberculosis was detection of the causal microbial agent. In conclusion, although malignant lymphomas and tuberculosis require histologic evaluation and a positive culture, respectively, for diagnosis, BALF analysis may be of additional value in distinguishing those disorders from sarcoidosis.
authors.affiliation: Department of Pulmonary Diseases, St. Antonius Hospital, Nieuwegein, The Netherlands.
authors.forename: M
authors.initials: M
authors.lastname: Drent
authors.forename: S S
authors.initials: SS
authors.lastname: Wagenaar
authors.forename: P H
authors.initials: PH
authors.lastname: Mulder
authors.forename: H
authors.initials: H
authors.lastname: van Velzen-Blad
authors.forename: M
authors.initials: M
authors.lastname: Diamant
authors.forename: J M
authors.initials: JM
authors.lastname: van den Bosch
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001992:Bronchoalveolar Lavage Fluid / Q000737:chemistry / Q000166:cytology / Q000276:immunology; D016516:CD4-CD8 Ratio; D015496:CD4-Positive T-Lymphocytes / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006689:Hodgkin Disease / Q000175:diagnosis* / Q000276:immunology / Q000473:pathology; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D007145:Immunoglobulin kappa-Chains / Q000032:analysis; D007146:Immunoglobulin lambda-Chains / Q000032:analysis; D008171:Lung Diseases / Q000175:diagnosis* / Q000276:immunology / Q000473:pathology; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000276:immunology / Q000473:pathology; D008228:Lymphoma, Non-Hodgkin / Q000175:diagnosis* / Q000276:immunology / Q000473:pathology; D008297:Male; D008875:Middle Aged; D012507:Sarcoidosis / Q000175:diagnosis* / Q000276:immunology / Q000473:pathology; D050378:T-Lymphocytes, Regulatory / Q000473:pathology; D014397:Tuberculosis, Pulmonary / Q000175:diagnosis* / Q000276:immunology / Q000473:pathology
chemical_list: D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007145:Immunoglobulin kappa-Chains; D007146:Immunoglobulin lambda-Chains