“…Secondary tumors can reach the heart through the inferior vena cava and invade the right atrium as solid masses, such as renal and hepatocellular carcinoma, uterine leiomyoma or Wilms tumors [1]. Among right atrial masses, right atrial cysts are rare and may represent hydatid, blood, bronchogenic cysts, cardiac varices or right coronary artery aneurysms [1,9,10]. Based on the appearance and location of the right atrial cysts, echocardiography helps in the differential diagnosis as follows:…”