title: A Rare Scenario of Stenosed Type IV Dual LAD with Normal Myocardial Perfusion Scan.
abstract: Dual left anterior descending artery (LAD) is a rare variation in the coronary artery anatomy having 4 different subtypes. We report a rare scenario of type IV dual LAD, with short LAD critical stenosis, compensated by a long LAD perfusing the same territory, which was missed on initial angiographic evaluation. Myocardial perfusion scan (MPS) of this patient showed preserved perfusion. A review of angiogram revealed this anomaly, indicating that a meticulous correlation of anatomic and functional modalities is necessary as it could change further management of patient.
authors.affiliation: Department of Nuclear Medicine, Narayana Hrudayalaya, Bangalore, India.
authors.forename: Ameya D
authors.initials: AD
authors.lastname: Puranik
authors.forename: Gopinathan
authors.initials: G
authors.lastname: Nair
authors.forename: R L
authors.initials: RL
authors.lastname: Vijayraghavan