Which of the following is NOT among the six hidden injuries of thoracic trauma?

• A. Blunt aortic rupture
• B. Diaphragmatic rupture
• C. Pneumothorax
• D. Esophageal rupture

Answer: (C)

In thoracic trauma, some injuries aren’t obvious at first and may be missed unless you look for them specifically; these are considered hidden injuries because they require targeted assessment or imaging to diagnose. The classic group includes diaphragmatic rupture, esophageal rupture, blunt aortic injury, tracheobronchial disruption, blunt cardiac injury, and pulmonary contusion. Pneumothorax stands apart because it is typically detectable on initial evaluation via physical exam or chest imaging, and while it can be life-threatening if it progresses, it is not grouped with those subtler injuries. So pneumothorax is the one that is NOT among the six hidden injuries.