PMC2718165_01
A 53-year-old man with lung cancer after bilateral upper lobectomy.. A. Chest radiograph shows moderate amount of pneumopericardium (arrows) and left hydropneumothorax (arrowheads).. B. CT scan obtained at the level of the liver dome shows pneumopericardium (arrow) and left hydropneumothorax (arrowheads). Note the presepce of underlying centrilobular emphysema in both lower lobes.. C. Enhanced CT scan shows irregular-shaped soft tissue mass (arrow) infiltrating into the left atrium. Note the presence of pneumopericardium (arrowheads) and ipsilateral pleural effusion (open arrow).. D. CT scan obtained at a level below (B) shows suspected pericardial defect (arrow).
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CT (Fig. 1B) showed pneumopericardium and left hydropneumothorax, neither of which had been detected during previous radiographic studies. CT demonstrated an irregular-shaped soft tissue mass infiltrating the left atrium, and this suggested tumor recurrence (Fig. 1C). A suspected pericardial defect communicated with the pneumothorax (Fig. 1D).