Congenital diaphragmatic hernia in an adult simulating a pleural liposarcoma

We report the case of a 32-year-old man with the onset of exercise-related dyspnea, chest pain and chest radiography simulating a pleural effusion. The computed tomography of the chest showed signs suggesting pleural liposarcoma. Because of these findings, a videothoracoscopy was performed which surprisingly showed the presence in the left pleural space of intrapleural omentum and spleen. This report underlines that the clinical manifestations of Bochdalek hernia in adults are variegate and in most cases preoperative diagnosis is not possible.