title: Left main bronchus compression due to main pulmonary artery dilatation in pulmonary hypertension: two case reports.
abstract: Pulmonary arterial dilatation associated with pulmonary hypertension may result in significant compression of local structures. Left main coronary artery and left recurrent laryngeal nerve compression have been described. Tracheobronchial compression from pulmonary arterial dilatation is rare in adults, and there are no reports in the literature of its occurrence in idiopathic pulmonary arterial hypertension. Compression in infants with congenital heart disease has been well described. We report 2 cases of tracheobronchial compression: first, an adult patient with idiopathic pulmonary arterial hypertension who presents with symptomatic left main bronchus compression, and second, an adult patient with Eisenmenger ventricular septal defect and right-sided aortic arch, with progressive intermedius and right middle lobe bronchi compression in association with enlarged pulmonary arteries.
authors.affiliation: University of Sydney, Camperdown, New South Wales, Australia ; MRC Clinical Sciences Centre, Imperial College London, Hammersmith Hospital Campus, London, United Kingdom.
authors.forename: Shareen K
authors.initials: SK
authors.lastname: Jaijee
authors.affiliation: Department of Imaging, Imperial College London, Hammersmith Hospital, London, United Kingdom.
authors.forename: Ben
authors.initials: B
authors.lastname: Ariff
authors.affiliation: Pulmonary Hypertension Service, Imperial College London, Hammersmith Hospital, London, United Kingdom.
authors.forename: Luke
authors.initials: L
authors.lastname: Howard
authors.affiliation: MRC Clinical Sciences Centre, Imperial College London, Hammersmith Hospital Campus, London, United Kingdom.
authors.forename: Declan P
authors.initials: DP
authors.lastname: O'Regan
authors.affiliation: Pulmonary Hypertension Service, Imperial College London, Hammersmith Hospital, London, United Kingdom.
authors.forename: Wendy
authors.initials: W
authors.lastname: Gin-Sing
authors.affiliation: Pulmonary Hypertension Service, Imperial College London, Hammersmith Hospital, London, United Kingdom.
authors.forename: Rachel
authors.initials: R
authors.lastname: Davies
authors.affiliation: Pulmonary Hypertension Service, Imperial College London, Hammersmith Hospital, London, United Kingdom.
authors.forename: J Simon R
authors.initials: JS
authors.lastname: Gibbs
keywords: bronchus compression; complications; pulmonary arterial dilatation