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Bronchoalveolar lavage in allergic granulomatosis and angiitis

B Wallaert, P Gosset, L Prin, F Bart, CH Marquette, AB Tonnel
European Respiratory Journal 1993 6: 413-417; DOI:
B Wallaert
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P Gosset
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L Prin
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F Bart
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CH Marquette
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AB Tonnel
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Abstract

Pulmonary involvement occurs in approximatively half of patients with allergic granulomatosis and angiitis (AGA). We studied bronchoalveolar cells from six patients with histologically proven AGA and compared our results with those obtained from four patients with chronic eosinophilic pneumonia (CEP), nine nonsmoking patients with bronchial asthma and blood eosinophilia, and 10 healthy nonsmokers. Pulmonary infiltrates were present in 5 out of 6 AGA patients. None of these patients was receiving corticosteroids at the time of entry to the study. Pulmonary function tests were normal in two cases, and demonstrated on obstructive ventilatory disorder with hypoxaemia in four cases. Total cell yield did not differ between AGA patients (22.4 +/- 4.9 x 10(4) cells.ml-1), asthmatics (9.6 +/- 1.7 x 10(4) cells.ml-1) and controls (11.3 +/- 1.5 x 10(4) cells.ml-1), whereas it was dramatically increased in patients with CEP (186.4 +/- 26.3 x 10(4) cells.ml-1). All six AGA patients demonstrated an increased percentage of alveolar eosinophils (mean: 31.1 +/- 9.9%; range 6-66%). In two patients evaluation of alveolar eosinophil subpopulations showed a low percentage (27 and 36%) of hypodense cells, when compared to the high levels (> 80%) found in CEP. No significant correlation could be established between bronchoalveolar (BAL) results and clinical data, pulmonary function abnormalities, or biological results. Sequential evaluation of alveolitis in two AGA patients undergoing corticosteroid therapy demonstrated persistent alveolar eosinophilia, despite disappearance of clinical, radiological and biological abnormalities. Our data demonstrate that eosinophils are present in the alveolar spaces of patients with AGA.(ABSTRACT TRUNCATED AT 250 WORDS)

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Bronchoalveolar lavage in allergic granulomatosis and angiitis
B Wallaert, P Gosset, L Prin, F Bart, CH Marquette, AB Tonnel
European Respiratory Journal Mar 1993, 6 (3) 413-417;

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Bronchoalveolar lavage in allergic granulomatosis and angiitis
B Wallaert, P Gosset, L Prin, F Bart, CH Marquette, AB Tonnel
European Respiratory Journal Mar 1993, 6 (3) 413-417;
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