Incomplete membrane vs abnormal chord of LATags: Cardiac sonography(Echocardiography), Esaote MyLab 70, Images, Video, Clinical report, Pediatric Posts 16:42 22-11-2015 Incomplete membrane vs abnormal cho...#1 Child 8 years on an echocardiography before anesthesia for surgery. In the side area of left atrium visualized linear structure (incomplete membrane/abnormal chord?) external link :: attachments(3) :::: file 1 :::: file 2 :::: file 3 :: HTML5 video plugin not supported! 08:56 06-07-2020 #2 Interesting case of accessory chord in the LA external link