Slide A
Tracheobronchitis related to prolonged tracheostomy: The tracheobronchial tree has been opened posteriorly. The tracheostomy opening is surrounded by a yellow zone of necrotic ulceration due to prolonged compression of the mucosa. There is marked erythema of the tracheobronchial mucosa, indicating a tracheobronchitis.

Slide B
Hemothorax following trauma: The opened thorax reveals a large collection of blood in the pleural cavity. The large volume of blood in a confined space has caused compression of the lung.