What does the term "raccoon sign" indicate?

• A. Bleeding in the lungs
• B. A basilar skull injury
• C. Head trauma.
• D. Infection around the eyes

Answer: (B)

The term "raccoon sign" refers specifically to periorbital ecchymosis, which is the discoloration around the eyes that resembles the dark circles often associated with a raccoon. This specific clinical sign is indicative of a basilar skull injury, where blood leaks into the tissue surrounding the eyes due to trauma to the skull base.

In cases of a basilar skull fracture, the integrity of the facial bones and surrounding structures may be compromised, leading to the characteristic bruising under the eyes. The presence of this sign often suggests a more serious underlying condition, which could include damage to the venous sinuses or the base of the skull.

While head trauma can be a general factor in many cases, "raccoon sign" specifically points to the nature and location of the injury, emphasizing the association with a basilar skull fracture rather than just any head trauma.