In an adult or adolescent with recent head or facial trauma presenting with periorbital ecchymosis (raccoon eyes), what is the most urgent concern and what diagnostic workup is recommended?

Raccoon Eyes: Urgent Concerns and Diagnostic Approach

In a patient with recent head or facial trauma presenting with periorbital ecchymosis (raccoon eyes), the most urgent concern is basilar skull fracture with potential intracranial hemorrhage, CSF leak, and cranial nerve injury—requiring immediate CT imaging of both the head and maxillofacial regions.

Primary Urgent Concerns

The presence of raccoon eyes following trauma signals high-energy impact and carries significant morbidity risk:

• Basilar skull fracture occurs in approximately 15 of 36 cases (42%) with traumatic periorbital ecchymosis 1
• Intracranial hemorrhage requiring surgical intervention occurs in 8-10% of patients with frontal sinus fractures 2
• Cranial nerve injury is the most common associated clinical feature, occurring in 10 of 36 patients (28%) 1
• CSF leak from cribriform plate or fovea ethmoidalis involvement 2

Immediate Diagnostic Workup

CT Imaging Protocol

Obtain both CT head AND CT maxillofacial imaging contemporaneously 2:

• CT Head (non-contrast): Essential to evaluate for intracranial hemorrhage, subdural/epidural hematoma, and brain injury. More than one-third of patients with frontal sinus fractures have concomitant intracranial injury 2

• CT Maxillofacial with thin-slice bone windows (1mm thickness): Critical for detecting subtle orbital roof fractures and anterior skull base fractures that may be missed on standard head CT 3. Multidetector CT with multiplanar reconstructions is the first-line modality 2

Important caveat: A head CT alone detects only 95% of facial fractures and often only partially images midface fractures 2. Dedicated maxillofacial CT is necessary for complete evaluation.

Clinical Assessment Priorities

Immediately assess for:

• Other basilar skull fracture signs: Battle's sign (retroauricular ecchymosis), hemotympanum, CSF otorrhea/rhinorrhea—though these are rarely present together with raccoon eyes 1
• Cranial nerve function: Particularly CN I-VII given their proximity to the anterior skull base
• Vision and pupillary response: To detect traumatic optic neuropathy or orbital compartment syndrome 4
• Intraocular pressure: Elevated IOP suggests orbital compartment syndrome requiring urgent decompression 5
• Malocclusion, facial asymmetry, enophthalmos: Indicators of midface fractures (Le Fort patterns) 2

Risk Stratification

High-Risk Features Requiring Imaging

Proceed with CT imaging if any of the following are present 6:

• Alcohol intoxication
• Inability to maintain vertical position
• Lying position at presentation
• Any neurological deficit
• GCS < 15 7

Anticoagulation Considerations

If the patient is on anticoagulation (warfarin, NOACs) or antiplatelet agents (clopidogrel):

• Single initial CT is generally adequate for discharge if normal 8
• Delayed intracranial hemorrhage is rare (0.6% for warfarin patients) 8
• However, observation for 4-6 hours with repeat imaging may be considered in high-risk cases 8

Critical Pitfalls to Avoid

1. Do not assume soft tissue injury alone: Even without visible external injury, subtle orbital roof fractures can occur, particularly in elderly or diabetic patients 3

2. Do not rely on standard head CT alone: Use high-resolution thin-slice bone windows (1mm) to detect subtle anterior skull base fractures 3

3. Do not miss non-traumatic causes: In the absence of clear trauma history, consider spontaneous orbital hemorrhage, bleeding disorders, amyloidosis, or multiple myeloma 5, 9

4. Do not delay imaging in intoxicated patients: Skull and facial fractures are more likely in this population 6

Surgical Intervention Threshold

Surgical intervention was required in only 8 of 36 patients (22%) with traumatic raccoon eyes 1. Indications include:

• Subdural/epidural hematoma with mass effect
• Displaced posterior table frontal sinus fractures (risk of dural disruption and CSF communication) 2
• Orbital compartment syndrome with vision loss 5
• Complex midface fractures requiring reconstruction 2

Disposition

Most patients with raccoon eyes do not require surgical intervention or post-discharge rehabilitation 1. However, admission for observation is warranted if:

• Intracranial hemorrhage is present
• Displaced skull base fractures exist
• Neurological deficits are present
• Patient is on anticoagulation with concerning mechanism 8

Patients with normal neurological examination and negative CT imaging can typically be discharged with close outpatient follow-up.