Rare Case of Recurrent Cystic Mediastinal Mass: Giant Pericardial Cyst

Pericardial cyst is unusual benign congenital malformations, with incidence of 1 person per 100.000. Although considered congenital lesion by incomplete fusion of embryogenesis, there are less frequent causes such as surgery, post trauma, and inflammatory process. Pericardial cyst can mimick malignant mediastinal tumor, cardiac chamber enlargement, bronchogenic cyst from Chest X-ray. Most of pericardial cyst are asymptomatic until they got bigger, such as dypsnea, sudden death, cardiac tamponade, rupture of the cyst. Radiology Imaging play important roles for rule out diagnostic therefore to prevent the complications. Computed tomography is modality of choice for pericardial cyst. We report a case of 59-year-old female complained of shortness of breath and cough since 5 days before admission, accompanied by fatigue and nausea. From thoracal CT revealed there is reccurent giant cystic mediastinal mass in left hemithorax, and pathology anatomy suggesting a pericardial cyst