congenital heart malformation ectasia of the right atrial appendage https://github.com/monarch-initiative/mondo/issues/6740 https://github.com/monarch-initiative/mondo/issues/6876 https://www.malacards.org/card/ectasia_of_the_right_atrial_appendage Orphanet:99101 dilatation of the right atrial appendage MEDGEN:1661316 GARD:0019649 MONDO:0020432 UMLS:C4749283 ectasia of the right atrial auricle Ectasia of the right atrial appendage is a rare cardiac malformation characterized by the enlargement of the right auricle without any other associated cardiac lesions. It can be asymptomatic and diagnosed fortuitously, prenatally or during routine clinical examinations or it can present with heart murmur, palpitation, atrial arrhythmia, fatigue, dyspnea or respiratory distress. dilatation of the right atrial auricle