Empyema due to previous pneumothorax therapy for cavitary tuberculosis. Left: Chest radiograph shows large right sided pleural mass with a sharp border towards the lung and obtuse angles of interface towards the chest wall. Slight caudad "drooping" is visible. Pleural calcifications are present. The right costophrenic sulcus is obscured. Right: CT scan shows a large loculated collection of liquid in the right hemithorax with obvious calcifications of the visceral and parietal pleura. Restrictive changes are evident and account for the small size of the right hemithorax. The thickness of the extrapleural fat in the posterolateral aspect of the right hemithorax is increased when compared to the left side. This compensates for the low lung volume on the right side.
