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  • Title: Utility of bronchoscopy combined with surgery in the treatment and outcomes of dogs with intrathoracic disease secondary to plant awn migration.
    Author: Gibson EA, Balsa IM, Mayhew PD, Phillips K, Giuffrida MA, Culp WTN, Steffey MA, Johnson LR.
    Journal: Vet Surg; 2019 Oct; 48(7):1309-1317. PubMed ID: 31334873.
    Abstract:
    OBJECTIVE: To evaluate the diagnostic and therapeutic utility of bronchoscopy in dogs undergoing computed tomography (CT) and surgery for intrathoracic disease (pyothorax and pneumothorax) secondary to migrating plant awns (MPA) and to report outcomes in dogs that did and did not undergo bronchoscopy in addition to CT and surgery. STUDY DESIGN: Retrospective case series. ANIMALS: Thirty-seven client-owned dogs. METHODS: Medical records from 2008 to 2017 were reviewed for dogs with documented MPA in the thoracic cavity treated with CT and surgery with or without bronchoscopy. Information regarding diagnostics, treatments, complications, and outcomes relating to hospitalization was evaluated. RESULTS: At least one abnormal lung lobe was identified by CT in all dogs. Bronchial abnormalities were identified with bronchoscopy in 21 of 22 dogs (95.4%) with available reports. Agreement between CT and bronchoscopy findings ranged from 50% to 81.8%, depending on lung lobe. Thirty-six dogs had one or more lung lobes surgically removed. Thirty-seven MPA were retrieved via bronchoscopy in 10 of 27 (37%) dogs, and 39 MPA were retrieved at surgery in 26 of 37 (70.3%) dogs. Actinomyces spp. were cultured from surgical samples in 7 of 33 (21.2%) dogs. Thirty-five of 37 (94.6%) dogs survived to discharge. CONCLUSION: Migrating plant awns were successfully retrieved via bronchoscopy. Agreement between CT findings and bronchoscopy was inconsistent, so there may be roles for both modalities. Short- and long-term survival was excellent in this cohort. CLINICAL SIGNIFICANCE: Bronchoscopy may allow for diagnostic and therapeutic advantages compared with CT in dogs with endobronchial MPA. Actinomyces spp appear to be variably present in surgically acquired bacterial cultures in dogs with MPA.
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