This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Lung), Subject name: Surgery
Lung injury with bad prognosis is? 
Select and explain. 
A. Open pneumothorax, B. Closed pneumothorax, C. Tension pneumothorax, D. All have same prognosis
C: Tension pneumothorax
Answer: C: Tension pneumothorax 
Explanation: ANSWER: (C) Tention pneumothoraxREF: Handbook of practical medicine: Volume 1 by Hermann Eichhorst page 29As a general thing, the prognosis of open and dosed pneumothorax is more favorable than that of tention pneumothorax, because the latter is apt to be attended with great tension of the gases, and marked displacement of the adjacent structures