Prenatal diagnosis of juxtaposition of the right atrial appendage before the third trimester of pregnancy. Importance of the 4 chamber plane

In 1893 Birmingham [1] first described a specimen with two atrial appendages side-by-side to the left of the great arteries. In 1954, Dixon [2] reported the first case with both atrial appendages to the right of the great arteries and suggested the term “juxtaposition of the atrial appendages” (JAA). This is a rare congenital heart malformation where the appendages are morphologically normal but arise ectopically from the anterior wall of the corresponding atrium, so both are located to the right (right juxtaposition) or to the left (left juxta position) of the great arteries.
Source: Progress in Pediatric Cardiology - Category: Cardiology Authors: Source Type: research