Incidence of Head and Neck Cancer With Lung Cancer Screening: Secondary Analysis of a Randomized Controlled Trial

To evaluate the incidence of head and neck cancers (HNC) in high-risk current and/or former smokers with screening low-dose computed tomography (LDCT) chest versus chest x-ray (CXR).

Second analysis of randomized clinical trial.

We performed a secondary analysis examining the incidence of HNC in the National Lung Screening Trial. This was a randomized trial comparing LDCT versus CXR screening for lung cancer detection in high-risk individuals (30 pack-year smokers who currently smoke or quit within the last 15 years, aged 55-74). We compared the incidence of HNC in participants screened with LDCT versus CXR. We performed subgroup analyses in participants with mucosal HNC (oral cavity, oropharynx, larynx, hypopharynx, nasal/sinus cavity, or nasopharynx) or nonmucosal HNC (thyroid or salivary gland) and examined survival in the two screening arms.

This trial enrolled 53,452 participants with a median follow-up of 6.2 years after randomization. The incidence of HNC was 111.8 cases per 100,000 person-years in the LDCT group versus 87.1 cases per 100,000 person-years in the CXR group (rate ratio 1.30, 95% confidence interval [CI] 1.05-1.61). There were 11.7 deaths from HNC per 100,000 person-years in the LDCT group and 12.9 deaths per 100,000 person-years in the CXR group (hazard ratio 0.80, 95% CI 0.42-1.52).

Participants screened with LDCT had a modestly higher incidence of HNC. As uptake and adherence of lung cancer screening guidelines improve, clinicians should recognize that incidental findings from screening may lead to increased detection of HNC.

3 Laryngoscope, 132:1609-1614, 2022.