This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Lucid interval is associated with: September 2010, March 2013 
Select and explain. 
A. Intracerebral hematoma, B. Subarachnoid hematoma, C. Extradural hematoma, D. All of the above
C: Extradural hematoma
Answer: C: Extradural hematoma 
Explanation: Ans. C: Extradural hematoma A lucid interval is a temporary improvement in a patient's condition after a traumatic brain injury, after which the condition deteriorates. A lucid interval is especially indicative of an epidural hematoma.