Identifying Potential Carotid Blowout on Post-Treatment Neck Surveillance Imaging

Area of Science:

• Radiology
• Vascular Surgery
• Oncology

Background:

• Carotid blowout is a life-threatening rupture of the carotid artery or its branches.
• It is a known complication in patients treated for head and neck cancer.
• Prompt identification and intervention are crucial for patient survival.

Purpose of the Study:

• To identify imaging features on surveillance neck scans that suggest an imminent carotid blowout.
• To enable early neuroendovascular consultation and preemptive treatment.
• To improve patient outcomes in head and neck cancer survivors.

Main Methods:

• Retrospective case review of post-treatment head and neck cancer patients.
• Analysis of routine surveillance neck imaging.
• Detailed interrogation of carotid vessels for specific abnormalities.

Main Results:

• Key imaging features include vessel irregularity, adjacent tissue ulceration, and exposed vessel segments.
• Presence of surrounding tumor or pseudoaneurysm are also significant indicators.
• These findings necessitate careful evaluation with appropriate window/level settings.

Conclusions:

• Specific imaging findings on surveillance neck scans can predict impending carotid blowout.
• Radiologists and clinicians should be vigilant for these signs.
• Early recognition facilitates timely intervention, potentially preventing catastrophic hemorrhage and improving patient prognosis.