title: Mediastinal mass and tracheal compression due to an aneurysm of a systemic-to-pulmonary collateral artery in a patient with pseudotruncus arteriosus.
abstract: A patient with pseudotruncus arteriosus who presented with a large mediastinal mass due to a systemic-to-pulmonary collateral artery aneurysm is reported. This aneurysm caused tracheal compression with resulting dyspnea and postobstructive pneumonitis, which are unusual presenting features in these patients. The differential diagnosis for a mediastinal mass arising in a patient with pseudotruncus arteriosus, or any other patient with possible systemic-to-pulmonary collateral arteries, should include aneurysm.
authors.affiliation: Department of Radiology, University of Florida, Gainesville 32610-0374.
authors.forename: S R
authors.initials: SR
authors.lastname: Kerns
authors.forename: M G
authors.initials: MG
authors.lastname: Glantz
authors.forename: F W
authors.initials: FW
authors.lastname: Sabatelli
authors.forename: I F
authors.initials: IF
authors.lastname: Hawkins
mesh_terms: D000328:Adult; D000402:Airway Obstruction / Q000175:diagnosis / Q000209:etiology*; D000783:Aneurysm / Q000150:complications* / Q000175:diagnosis; D001158:Arteries; D003097:Collateral Circulation; D006801:Humans; D008168:Lung / Q000098:blood supply*; D008297:Male; D008477:Mediastinal Diseases / Q000175:diagnosis / Q000209:etiology*; D011651:Pulmonary Artery / Q000002:abnormalities; D013771:Tetralogy of Fallot / Q000150:complications* / Q000175:diagnosis; D014135:Tracheal Stenosis / Q000175:diagnosis / Q000209:etiology*