Study end points
HNSCC, tumor
TUMOR
The primary end point was the prevalence of SPTs detected during endoscopic screening of the upper GI tract. Secondary end points were 1) histology and tumor stage of SPTs, 2) time to detection, treatment, and outcomes of patients with HNSCC and SPTs, and 3) proportion of SPTs detected during a follow-up endoscopy after 1 year. Additionally, we also report on the proportion, histology, and stage of SPTs diagnosed on imaging for HNSCC or in symptomatic patients.