Tabriz University of Medical Sciences Journal of Cardiovascular and Thoracic Research 2008-5117 5 3 2013 09 06 Simultaneous Operation of Hydatid Cyst of the Heart and Liver:A Case Report 127 128 10.5681/jcvtr.2013.027 EN Rezayat Parvizi Hossein Namdar Eissa Bilehjani Amrollah Bayat Mohammad ali sheikhalizadeh Journal Article 10.5681/jcvtr.2013.027 2014 06 21 Primary echinococcosis of the heart is exceptionally uncommon and is reported 0.5% to 2% of all hydatid cyst sites in comparison with liver (70%) or lung (20%) involvement. Hydatid disease of the heart is caused by the cestode tapeworm echinococcosis granulosis or alveolaris. We present a 29-year-old female with hydatid disease of the liver and heart. She only complained of abdominal pain and palpitation. Echocardiography and multi-slice computed tomography (MSCT) showed a 120×101 mm cyst in the liver and 64 mm in the right ventricular free wall. Both cysts were excised within one procedure successfully.