title: Type 4 dual left anterior descending artery: a very rare coronary anomaly circulation.
abstract: Coronary artery anomalies are congenital changes in their origin, course, and/or structure. They are the second most frequent cause of sudden death in young athletes. Dual LAD artery is a rare coronary anomaly. We present the case of a 44-year-old man with recent onset exertional angina and documented ischemia whose coronary angiogram and computed tomography (CT) showed type 4 dual LAD artery, the rarest and most interesting variant.
authors.affiliation: Department of Interventional Cardiology, Heart Institute of the University of São Paulo, Avenida Dr. Enéas de Carvalho Aguiar 44, 05403-900 São Paulo, SP, Brazil.
authors.forename: Marcos Danillo
authors.initials: MD
authors.lastname: Peixoto Oliveira
authors.affiliation: Department of Interventional Cardiology, Heart Institute of the University of São Paulo, Avenida Dr. Enéas de Carvalho Aguiar 44, 05403-900 São Paulo, SP, Brazil.
authors.forename: Pedro H M Craveiro
authors.initials: PH
authors.lastname: de Melo
authors.affiliation: Department of Interventional Cardiology, Heart Institute of the University of São Paulo, Avenida Dr. Enéas de Carvalho Aguiar 44, 05403-900 São Paulo, SP, Brazil.
authors.forename: Antonio
authors.initials: A
authors.lastname: Esteves Filho
authors.affiliation: Department of Interventional Cardiology, Heart Institute of the University of São Paulo, Avenida Dr. Enéas de Carvalho Aguiar 44, 05403-900 São Paulo, SP, Brazil.
authors.forename: Luiz J
authors.initials: LJ
authors.lastname: Kajita
authors.affiliation: Department of Interventional Cardiology, Heart Institute of the University of São Paulo, Avenida Dr. Enéas de Carvalho Aguiar 44, 05403-900 São Paulo, SP, Brazil.
authors.forename: Expedito E
authors.initials: EE
authors.lastname: Ribeiro
authors.affiliation: Department of Interventional Cardiology, Heart Institute of the University of São Paulo, Avenida Dr. Enéas de Carvalho Aguiar 44, 05403-900 São Paulo, SP, Brazil.
authors.forename: Pedro Alves
authors.initials: PA
authors.lastname: Lemos