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  • Title: Clinical features and long-term follow-up of 70 cases of canine idiopathic eosinophilic lung disease.
    Author: Casamian-Sorrosal D, Silvestrini P, Blake R, Kortum A, Watson PJ, Martínez Y, Lopez Alvarez J, Keegan S.
    Journal: Vet Rec; 2020 Oct 17; 187(8):e65. PubMed ID: 32661182.
    Abstract:
    BACKGROUND: Canine idiopathic eosinophilic lung disease (ELD) is sparsely documented in the literature. METHODS: Clinical presentation and outcome of dogs diagnosed with ELD (eosinophilic bronchitis or eosinophilic bronchopneumonia) were reviewed. Subgroups were made based on chronicity of clinical signs and findings of thoracic imaging: NCI (no changes in thoracic imaging), BRON (bronchial/peribronchial pattern), INT (bronchointerstitial/interstitial/alveolar). RESULTS: Seventy cases were included. There were more young to adult, crossbreed and female dogs. Compared with the other two groups NCI dogs showed lower bronchoalveolar lavage fluid eosinophilic pleocytosis and absence of circulating eosinophilia, bronchiectasis or death due to respiratory disease. All dogs responded clinically to corticosteroids. Median treatment duration was four months. Remission (no clinical signs after treatment discontinuation for >one month) and long-term remission (>six months) was achieved in 60 per cent, and 51 per cent of patients, respectively. Relapse occurred in 26 per cent of cases after remission but was rare (3 per cent) after long-term remission. The one-year, two-year and four-year survival to death due to respiratory disease was 98 per cent, 97 per cent and 91 per cent, respectively. CONCLUSION: Prognosis and initial clinical response for ELD was generally good although achievement of long-term remission was only seen in 51 per cent of dogs. Different outcomes based on chronicity of signs, corticosteroid dose, thoracic imaging abnormalities and other clinical variables were not appreciated.
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