Tehran University of Medical Sciences The Research in Heart Yield and Translational Medicine (RHYTHM) 3115-7270 5 3 2010 09 15 Cor Triatriatum: Preoperative Diagnosis and Successful Surgical Correction in a Four-Year-Old Girl 153 155 Kiyomars Abbasi Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran. Hakimeh Sadeghian Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran. Neda Ghafari-Marandi Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran. Afsaneh Sadeghian Fatemieh Hospital, Shahrood University of Medical Sciences, Shahrood, Iran. 2015 10 03 Cor triatriatum is defined as a membrane within the left atrium, which might lead to restricted pulmonary venous return. Diagnosis is usually achieved by echocardiography in early infancy. Therapy of choice is the excision of the membrane. Herein, successful correction of cor triatriatum in a 4-year-old girl is presented, and the clinical features, echocardiographic findings, and the surgical treatment are discussed. https://rhythm.tums.ac.ir/index.php/jthc/article/view/181 https://rhythm.tums.ac.ir/index.php/jthc/article/download/181/179