title: Occlusion of the left main coronary artery and collateral circulation via the conus branch.
abstract: We report the case of a 71-year-old-man, a smoker, admitted for unstable angina. Subsequent investigation revealed complete proximal occlusion of the left main coronary with an unusual collateral circulation. The left coronary artery was filled by a large conus branch originating from the right sinus of Valsalva. This case shows the importance of looking for atypical collateral circulation in patients with chronic occlusion of the left main coronary artery and normal left ventricular function.
authors.affiliation: Instituto Cardiovascular, Hosptial Clinico San Carlos, Madrid, Spain. albertutor@hotmail.com
authors.forename: Jose Alberto
authors.initials: JA
authors.lastname: de Agustin
authors.forename: Ivan Javier
authors.initials: IJ
authors.lastname: Nunez-Gil
authors.forename: Maria
authors.initials: M
authors.lastname: del Carmen Manzano
authors.forename: David
authors.initials: D
authors.lastname: Vivas
authors.forename: Borja Ruiz
authors.initials: BR
authors.lastname: Mateos
authors.forename: Rocio
authors.initials: R
authors.lastname: Carda
authors.forename: Isidre
authors.initials: I
authors.lastname: Vilacosta
authors.forename: Jose Luis
authors.initials: JL
authors.lastname: Zamorano
authors.forename: Carlos
authors.initials: C
authors.lastname: Macaya
mesh_terms: D000368:Aged; D000789:Angina, Unstable / Q000209:etiology / Q000503:physiopathology; D003097:Collateral Circulation; D017023:Coronary Angiography / Q000379:methods; D003326:Coronary Circulation; D054059:Coronary Occlusion / Q000150:complications / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000601:surgery; D006801:Humans; D007387:Internal Mammary-Coronary Artery Anastomosis; D008297:Male; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome