title: Intramuscular small vessel arteriovenous malformation of the left ventricle in an asymptomatic adolescent: a case report and literature review.
abstract: Primary vascular tumours of the heart are rare and heterogeneous in their presentation and classification.We present a primary intramuscular vascular malformation of the left ventricle in an asymptomatic 12-year-old girl. Characteristics on cardiac magnetic resonance imaging, specifically increased signal intensity on T2-weighted images, and marked contrast enhancement with gadolinium were suggestive of increased vascularity. Histologically, the mass was determined to be an intramuscular vascular malformation of the small vessel arteriovenous subtype. This represents one of a select few intramuscular vascular malformations of the left ventricle reported in children. Our patient remains completely asymptomatic and has had no change in the size and appearance of the mass after more than 30 months of follow-up.
authors.affiliation: Department of Pediatrics, Division of Pediatric Cardiology, Lucile Packard Children's Hospital at Stanford, Palo Alto, California 94304, USA. amym1@stanford.edu
authors.forename: Amy N
authors.initials: AN
authors.lastname: McCammond
authors.forename: Erin R
authors.initials: ER
authors.lastname: Rudzinski
authors.forename: Brian J
authors.initials: BJ
authors.lastname: Morrison
authors.forename: Michael
authors.initials: M
authors.lastname: Silberbach
mesh_terms: D001165:Arteriovenous Malformations / Q000000981:diagnostic imaging / Q000473:pathology*; D058070:Asymptomatic Diseases; D006328:Cardiac Catheterization; D002648:Child; D017023:Coronary Angiography; D003330:Coronary Vessel Anomalies / Q000000981:diagnostic imaging / Q000473:pathology*; D004452:Echocardiography; D005260:Female; D006338:Heart Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D006352:Heart Ventricles; D006391:Hemangioma / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D009206:Myocardium / Q000473:pathology*