Right atrial appendage aneurysm complicated with atrial septal defect: A rare case report

Abstract

A 13-year-old girl was referred to our hospital with a history of chest tightness and shortness of breath after activity for 1 year.Systolic murmurs were audible on auscultation of the left sternal border second intercostal. Electrocardiography indicated a normal sinus rhythm. Transthoracic echocardiography (TTE) revealed a large cavity connected to the lateral wall of the right atrium (RA).The apical four-chamber view revealed this large cavity, measuring 33 × 38 mm and communicating with the RA via a broad neck, the diameter of which was 20 mm (Figure 1A, arrow). The anatomical position and structure of the tricuspid valve (TV) were normal. The right ventricle (RV) and TV annular were moderately compressed by the abnormal cavity, whereas tricuspid regurgitation was mild.No thrombus was observed within the abnormal chamber. Color Doppler flow imaging (CDFI) showed free bi-directional flow between the RA and large cavity ( Figure 1B-C, arrow). In addition, a 10-mm atrial septal defect (ASD) was noted, through which a leftto-right shunt signal was detected on CDFI. Other cardiac parameters were within the normal ranges. Thus, the patient was diagnosed

Fetal atrial appendage aneurysm: Prenatal diagnosis by echocardiography and prognosis

“…11 While, after performing the atrial septal defect transcatheter closure, the right atrial appendage aneurysm may reduce in size compared to that of presurgery. 22 This phenomenon, which might result from reduced right atrium volume load, was also observed in Case. 9. aneurysm.…”