An 85-year-old woman was hospitalized in our thoracic surgery department because of dyspnea. She complained of difficulty in performing her normal peasant activity for about 3 months. Chest radiography showed nonspecific mediastinal enlargement, and thorax computed tomography determined multiple mediastinal and pericardial cystic lesions in the absence of pulmonary lesions (Figures 1 and 2). We considered the differential diagnosis including possible pleuropericardial cysts, congenital lung cysts, as well as hydatid disease.
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