case_images: PMC4153237_01
case_images: Chest CT scan showing cyst in the posterior wall of LA and pericardium
case_images: Tanaffos-12-12-078-g001.jpg
case_images: PMC4153237_01_Tanaffos-12-12-078-g001.jpg
case_images: F0001
case_images: Spiral chest CT scan showed multiple cystic masses in anterior and middle mediastinum.The largest one was located posterior to LA that was suggestive of pericardial hydatid cyst which in comparison with previous CT showed no significant change except for its compressive effect on posterior LA wall (Figure 1).
case_images: Transesophageal echocardiography shows large multilobular mass in posterior LA wall with obstruction of all pulmonary vein ostia
case_images: Tanaffos-12-12-078-g002.jpg
case_images: PMC4153237_01_Tanaffos-12-12-078-g002.jpg
case_images: F0002
case_images: Transthoracic and transesophageal echocardiography was performed that showed large obstructive mass in posterior wall of LA with size of 3.7x2.8 cm completely obstructing all pulmonary vein ostia suggestive of large hydatid cyst in posterior wall of LA (Figure 2).The interatrial septum showed patent foramen ovale (PFO) with diameter of 2.5 mm.
case_images: Resected specimen showing large hydatid cyst with multiple daughter cysts
case_images: Tanaffos-12-12-078-g003.jpg
case_images: PMC4153237_01_Tanaffos-12-12-078-g003.jpg
case_images: F0003
case_images: Post -operative diagnosis was hydatid cyst within pericardium between aorta, superior vena cava (SVC) and pulmonary artery and in oblique sinus with extension to the posterior wall of LA (Figure 3).