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Black eyebrow sign - orbital emphysema

Case contributed by Ian Bickle
Diagnosis certain

Presentation

Left orbital injury. Fracture?

Patient Data

Age: 40 years
Gender: Female

Curvilnear lucency in the superior aspect of the left orbit.

Case Discussion

The black eyebrow sign indicates orbital emphysema, typically from an orbital fracture, with air having entered from the adjacent sinuses.

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