Tehran University of Medical Sciences The Research in Heart Yield and Translational Medicine (RHYTHM) 3115-7270 5 2 2010 04 15 95 97 Farahnaz Nikdoust Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran Hakimeh Sadeghian Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran Bahareh Eslami Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran Shahla Majidi Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran Dariush Javidi Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran. 2015 10 03 Quadricuspid aortic valve (QAV) is an uncommon congenital anomaly which was an incidental finding during surgery or autopsy in the past. We present the case of a 44-year-old woman with moderately severe aortic regurgitation due to unequal cusp size QAV diagnosed via transesophageal echocardiography. Due to echocardiographic imaging improvement, the diagnosis of QAV is now easier and earlier than the past. https://rhythm.tums.ac.ir/index.php/jthc/article/view/170 https://rhythm.tums.ac.ir/index.php/jthc/article/download/170/168