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
Raccoon eyes are associated with: 
Select and explain. 
A. Orbital cellulitis, B. Head injury, C. Conjunctivitis, D. None of the above
B: Head injury
Answer: B: Head injury 
Explanation: Extravasation of blood results in ecchymosis behind the ear, known as Battle's sign. A fracture of the anterior skull base can result in anosmia (loss of smell from damage to the olfactory nerve), CSF drainage from the nose (rhinorrhea), or periorbital ecchymoses, known as raccoon eyes. Ref: Schwaz's principle of surgery 9th edition, chapter 42.