Screening and Treatment of Carotid Stenosis in Patients with HPV-Associated Oropharyngeal Cancer
Greenleaf, E. K.; Sandulache, V.; Manikonda, S. P. R.; Barshes, N. R.
Show abstract
Patients with history of neck radiation for Human Papilloma Virus (HPV)-associated head and neck cancer experience rapid progression of carotid artery stenosis. The present study sought to determine whether screening and treating asymptomatic carotid artery stenosis in patients with a history of neck radiation is cost-effective. This study is a cost-utility analysis using a probabilistic Markov model over a thirty-year time horizon assessing carotid screening and treatment to avoid neurologic consequences of neck radiation for HPV-associated head and neck cancer. A strategy of no carotid surveillance was associated with a 14.8% cumulative risk of stroke and a strategy of ultrasound surveillance and treatment with TCAR was associated with a 3.0% cumulative risk of stroke. The latter had a median incremental cost of $1.04 million USD and provided a median 39.1 additional QALYs, resulting in a median incremental cost-effectiveness ratio of $26,556 per QALY. In conclusion, this study suggests that ultrasound surveillance and treatment with TCAR for asymptomatic carotid artery stenosis is likely to be cost-effective for patients who have been successfully treated with radiation therapy for HPV-associated head and neck cancer.
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