title: Percutaneous revascularization for left main coronary artery compression from pulmonary artery enlargement due to pulmonary hypertension.
abstract: Extrinsic compression due to pulmonary artery enlargement from severe pulmonary         hypertension is an uncommon cause of hemodynamically significant left main artery         stenosis. Patients with severe pulmonary hypertension who experience angina should         be evaluated for possible extrinsic compression of the left main artery due to pulmonary         artery enlargement. Although computed tomographic angiography and cardiac         magnetic resonance imaging are helpful in the screening for extrinsic left main artery         compression, coronary angiography is the gold standard for the diagnosis. Percutaneous         coronary intervention of the left main artery is feasible, safe, and a reasonable initial         revascularization strategy for these patients because of the high risk of postoperative         right ventricular failure and mortality observed with bypass surgery.
authors.affiliation: Division of Cardiology, University of California, Los Angeles, CA, USA.
authors.forename: Michael S
authors.initials: MS
authors.lastname: Lee
authors.forename: Ehtisham
authors.initials: E
authors.lastname: Mahmud
mesh_terms: D015906:Angioplasty, Balloon, Coronary / Q000295:instrumentation; D017023:Coronary Angiography / Q000379:methods; D023921:Coronary Stenosis / Q000175:diagnosis / Q000209:etiology / Q000628:therapy*; D005260:Female; D006801:Humans; D006976:Hypertension, Pulmonary / Q000150:complications* / Q000175:diagnosis / Q000473:pathology; D008875:Middle Aged; D011651:Pulmonary Artery / Q000000981:diagnostic imaging / Q000473:pathology*; D015607:Stents; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome