title: Leiomyosarcoma of the pulmonary artery diagnosed by endobronchial ultrasound-guided transbronchial needle aspiration.
abstract: Leiomyosarcoma of the pulmonary vasculature is an extremely rare condition that has not been previously diagnosed by endobronchial ultrasound (EBUS) bronchoscopy. We present the case of a 43-year-old white male with a history of leiomyosarcoma who was diagnosed with pulmonary embolism 2 years ago. As the filling defects on follow-up chest computed tomography continued to worsen despite anticoagulation, EBUS-guided transbronchial needle aspiration (EBUS-TBNA) of the right pulmonary artery lesion was safely and successfully performed. Cytopathological examination revealed the "thrombus" to be metastatic leiomyosarcoma. In experienced hands, and carefully selected cases, EBUS-TBNA seems to be a safe and effective in diagnosing thoracic endovascular lesions.
authors.affiliation: Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University at Buffalo, State University of New York, USA.
authors.forename: Kush
authors.initials: K
authors.lastname: Modi
authors.affiliation: Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University at Buffalo, State University of New York, USA ; Department of Medicine, Roswell Park Cancer Institute, New York, USA.
authors.forename: Samjot
authors.initials: S
authors.lastname: Dhillon
authors.affiliation: Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University at Buffalo, State University of New York, USA.
authors.forename: Abhishek
authors.initials: A
authors.lastname: Kumar
authors.affiliation: Department of Medicine, Roswell Park Cancer Institute, New York, USA.
authors.forename: Lourdes
authors.initials: L
authors.lastname: Ylagan
authors.affiliation: Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University at Buffalo, State University of New York, USA ; Department of Medicine, Roswell Park Cancer Institute, New York, USA.
authors.forename: Kassem
authors.initials: K
authors.lastname: Harris
keywords: Biopsy; endobronchial ultrasound; leiomyosarcoma; pulmonary artery