title: Right pulmonary artery-to-left atrial fistula: a differential diagnosis of cyanosis without structural heart disease.
abstract: We present the case of a 19-year-old male who presented with late-onset cyanosis and a normal cardiovascular system examination. Contrast echocardiography revealed a right-to-left shunt. A right pulmonary artery-to-left atrial fistula was seen on the angiogram, which was surgically corrected. Early intervention is indicated to prevent complications in patients with this condition.
authors.affiliation: Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India. drkn14@sify.com
authors.forename: Nair
authors.initials: N
authors.lastname: Krishnakumar
authors.forename: Manohar R
authors.initials: MR
authors.lastname: Krishna
authors.forename: J A
authors.initials: JA
authors.lastname: Tharakan
mesh_terms: D000328:Adult; D006328:Cardiac Catheterization; D017023:Coronary Angiography; D003490:Cyanosis / Q000000981:diagnostic imaging / Q000473:pathology; D003937:Diagnosis, Differential; D004452:Echocardiography; D005402:Fistula / Q000000981:diagnostic imaging* / Q000473:pathology*; D006325:Heart Atria / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D008297:Male; D011651:Pulmonary Artery / Q000000981:diagnostic imaging / Q000473:pathology*; D011667:Pulmonary Veins / Q000000981:diagnostic imaging / Q000473:pathology