[A case of medial pneumothorax in the aged].

A 81-year-old man was admitted because of left recurrent pneumothorax with pleural adhesion. A drainage tube was inserted through the left lateral thoracic wall. The lung seemed to be fully expanded in the AP chest X-ray film but his dyspnea was not relieved. The CT examination showed severe medial pneumothorax. He was operated on and recovered uneventfully. It is important to note medial pneumothorax in patients in the supine position and/or with pleural adhesion.