bronchoalveolar lavage

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1. irrigation or washing out of an organ or cavity, as of the stomach or intestine.
2. to wash out, or irrigate.
bronchoalveolar lavage a technique by which cells and fluid from bronchioles and lung alveoli are removed for diagnosis of disease or evaluation of treatment; a bronchoscope is wedged into a bronchus and sterile saline is pumped in and then removed along with the fluid and cells to be analyzed.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

bronchoalveolar lavage (BAL),

procedure for collecting the cellular milieu of the alveoli (for example, microorganisms, types of inflammatory cells) by use of a bronchoscope or other hollow tube through which saline is instilled into distal bronchi and then withdrawn.
Farlex Partner Medical Dictionary © Farlex 2012

bronchoalveolar lavage

A “wash” of the upper respiratory tract mucosa to obtain cells for evaluating inflammation, infection or cancer.

Utility of BAL 
• Cytologic analysis;
• Analysis of CD4:CD8 ratio; and rarely also
• To obtain cells for gene rearrangement to diagnose lymphoma.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

bronchoalveolar lavage

Cytology A 'wash' of the upper respiratory tract to obtain cells for evaluating inflammation or cancer of lungs; BAL material is used for
1. Cytologic analysis.
2. Analysis of CD4:CD8 ratio and, rarely.
3. To obtain cells for gene rearrangement, ie Southern blot hybridization, to diagnose lymphoma.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

bron·cho·al·ve·o·lar la·vage

(BAL) (brong'kō-al-vē'ŏ-lăr lă-vahzh')
A procedureperformed using fiberoptic bronchoscopy, during which a distal airway is occluded and liquid is then introduced into the airway and recovered for examination of cell types and microorganisms.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Bronchoalveolar lavage

A way of obtaining a sample of fluid from the airways by inserting a flexible tube through the windpipe. Used to diagnose the type of lung disease.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Diagnosis of adult measles pneumonia from bronchoalveolar lavage fluid by reverse-transcriptase polymerase chain reaction [in Japanese].
Diagnostic usefulness of bronchoalveolar lavage fluid xpert MTB/RIF in pauci-bacillary pulmonary tuberculosis.
Correlation between vitamin D3 (VD) with (A) final body weight of mice ([r.sup.2]=0.4671, P<0.05), (B) lung resistance (RL) at 25 mg/mL of methacholine (Mch) ([r.sup.2]=0.5905, P<0.05), (c) total inflammatory cells in bronchoalveolar lavage fluid (BALF) ([r.sup.2]=0.7507, P<0.05) and IL-1[beta] (D) and IL-17 (E) concentrations in BALF ([r.sup.2]=0.7498, P<0.05; [r.sup.2]=0.7811, P<0.05).
Bronchoalveolar lavage fluids (BALF) were collected to determine the BALF (a) tumor necrosis factor- (TNF-) [alpha] and (b) interleukin- (IL-) 6 levels.
Proinflammatory cytokines (right side of charts), anti- inflammatory cytokines (lower side of charts), and chemokines (left side of charts) are highlighted in pink, yellow, and blue, respectively: P-serum, serum from pneumonia model; E-serum, serum from encephalitis model; BALF, bronchoalveolar lavage fluid from pneumonia model; and CSF, cerebrospinal fluid from encephalitis model.
Abbreviations APACHE II: Acute physiology and chronic health evaluation BAL: Bronchoalveolar lavage BALF: Bronchoalveolar lavage fluid CFU: Colony-forming units CPIS: Clinical pulmonary infection score EBC: Exhaled breath condensate ELISA: Enzyme-linked immunosorbent assay ETA: Endotracheal aspiration GCS: Glasgow Coma Scale ICU: Intensive care unit IQR: Interquartile range PCT: Procalcitonin POCI: Posterior circulation infarcts ROC: Receiver-operating characteristic curves sTREM-1: Soluble triggering receptor expressed on myeloid cells-1 TACI: Total anterior circulation infarcts VAP: Ventilator acquired pneumonia.
The diagnosis of PH is confirmed by presence of hemosiderin-bearing macrophages in bronchoalveolar lavage fluids or at lung biopsy materials, without underlying vasculitis, nonspecific granulomatous inflammation, or deposits of immunoglobulin [5].
Iannuzzi, "Cytokines in the bronchoalveolar lavage fluid of patients with active pulmonary sarcoidosis," American Journal of Respiratory and Critical Care Medicine, vol.
proved that Yupingfeng Pulvis (HFBP) alleviates the inflammation in the lung tissue of mice by reducing the proportion of Th17 cells and increasing the proportion of Treg cells in bronchoalveolar lavage fluid.
Total Protein Content in Bronchoalveolar Lavage Fluid. Animals were anesthetized with intraperitoneal pentobarbital (50 mg/kg).
Bronchoalveolar lavage fluid analysis provides diagnostic information on pulmonary Langerhans cell histiocytosis.
Bronchoalveolar lavage fluid (BALF) was taken from the right upper and mid lobes and a transbronchial biopsy was taken from the right upper lobe anterior segment.