Document Type : Case Report
Department of Cardiology, 9 Day Hospital, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, IR Iran.
Department of Cardiac Surgery, Razavi Hospital, Imam Reza International University, Mashhad, IR Iran.
Department of Echocardiography, Razavi Hospital, Imam Reza International University, Mashhad, IR Iran.
Department of Critical Care, Imam Reza Hospital, Mashhad University of Medical Sciences, Mashhad, IR Iran.
Department of Extracorporeal Circulation (ECC), Razavi Hospital, Imam Reza International University, Mashhad, IR Iran.
Pericardial cysts are a scarce cause of mediastinal masses. They are usually asymptomatic, even in large sizes. Accurate diagnosis of pericardial cysts is possible with multiple diagnostic imaging modalities. A 41-year-old woman complaining of bilateral lower limb edema, exertional dyspnea, and recurrent palpitations was admitted to our emergency department. She had experienced a syncope state. Echocardiography showed a reduced right-side heart function due to a large cystic-like mass at the supradiaphragmatic right paracardiac region with a compressive effect on the right heart. A computed tomography scan confirmed the presence of a giant pericardial cyst. The patient underwent cardiac surgery to excise the mass, 15×13.5×3.5 cm in size. This case report shows that huge right-sided pericardial cysts must be considered in the differential diagnosis of right-sided heart failure. The preferable and reasonable approach to a patient with a huge pericardial cyst is surgical excision for symptom alleviation, early identification, and removal. (Iranian Heart Journal 2022; 23(4): 109-114)