Orbital Compartment Syndrome Following Post-Traumatic Subgaleal Hematoma.

Orbital extension of subgaleal hematoma is rare. This report describes the case of an otherwise healthy 10-year-old girl who developed delayed contralateral proptosis and external ophthalmoplegia after relatively minor right-sided forehead trauma. She was found to have bilateral subgaleal hematomas communicating with a left superior subperiostial orbital hematoma. Over the course of 2 days, she developed an orbital compartment syndrome requiring emergent canthotomy and cantholysis, followed by surgical incision and drainage of her scalp hematoma without orbitotomy. Hematologic work-up revealed heterozygous factor VII deficiency.