title: A different kind of Christmas tree: anomalous origin of the right coronary artery from the pulmonary artery (ARCAPA).
abstract: Anomalous right coronary artery from the pulmonary artery (ARCAPA) is a rare congenital coronary anomaly that has an incidence of 0.002%. We report a case of a previously healthy female who presented to our hospital with pneumonia and was incidentally discovered to have ARCAPA. This was initially diagnosed on echocardiography by the unusual echocardiographic finding of multiple color flow Doppler signals around the right ventricular free wall and apex which were subsequently confirmed by angiography to be due to extensive collateral circulation between the left and right coronary arteries. This represents an unusual echocardiographic manifestation of this very rare condition.
authors.affiliation: Einstein Medical Center, Einstein Institute for Heart and Vascular Health, Philadelphia, Pennsylvania.
authors.forename: Olayinka
authors.initials: O
authors.lastname: Afolabi-Brown
authors.forename: Christian
authors.initials: C
authors.lastname: Witzke
authors.forename: Raul
authors.initials: R
authors.lastname: Moldovan
authors.forename: Gregg
authors.initials: G
authors.lastname: Pressman
mesh_terms: D001159:Arterio-Arterial Fistula / Q000151:congenital* / Q000000981:diagnostic imaging*; D003330:Coronary Vessel Anomalies / Q000000981:diagnostic imaging*; D004452:Echocardiography / Q000379:methods*; D005260:Female; D006801:Humans; D008875:Middle Aged; D011651:Pulmonary Artery / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D035583:Rare Diseases / Q000000981:diagnostic imaging
keywords: anomalous coronary arteries; anomalous origin of right coronary artery