FIGURE 1.

Nonexpandable lung. a) A single-use digital pleural manometer for use during thoracentesis. b) Pleural elastance curves representing normal, entrapped and trapped lung. Reproduced and modified from [13] with permission from the publisher. c) Chest radiograph demonstrating nonexpandable lung due to malignancy. A hydropneumothorax is visible at the left base with a large-bore chest drain in situ following thoracoscopy. The patient was treated with an indwelling pleural catheter.