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Summary
Head and neck cancer radiation significantly increases the risk of extracranial artery stenosis or occlusion. Continuous wave (CW) Doppler ultrasound can detect these asymptomatic carotid lesions in irradiated patients.
Area of Science:
- Vascular Surgery
- Radiology
- Oncology
Context:
- Head and neck cancer patients often undergo radiation therapy, which can affect blood vessels.
- Extracranial arteries, particularly the carotid arteries, are susceptible to damage from radiation.
- Long-term follow-up is crucial for detecting complications after cervical irradiation.
Purpose:
- To investigate the incidence of extracranial artery stenosis or occlusion in patients treated with radiation for head and neck cancers.
- To compare the prevalence of these vascular lesions in irradiated patients versus a healthy control group.
- To evaluate the utility of continuous wave (CW) Doppler ultrasonography in screening for asymptomatic carotid artery disease in this patient population.
Summary:
- Continuous wave (CW) Doppler and duplex-scan ultrasonography were used to examine extracranial arteries in 28 irradiated head and neck cancer patients and 556 healthy individuals.
- Stenosis or occlusion was found in 21% of irradiated patients compared to 9.1% of healthy controls, with a mean follow-up of 7.3 years post-irradiation.
- The study indicates a significantly higher incidence of extracranial artery stenosis or occlusion in patients who received cervical irradiation.
Impact:
- Continuous wave (CW) Doppler ultrasonography is recommended for routine follow-up of patients with a history of cervical irradiation.
- Early, noninvasive detection of asymptomatic carotid lesions can aid in preventing stroke and other vascular events.
- This noninvasive screening method can improve patient outcomes by identifying at-risk individuals for timely intervention.