Oropharyngeal Cancer with Distant Metastasis: A Case-Based Imaging Insight Using FDG PET/CT on June 08, 2025 AdvancedCancer CancerStaging CervicalLymphadenopathy FDGPETCT HeadNeckCancer HPVPositiveCancer ImagingDiagnosis MetastaticCancer OropharyngealCancer PalliativeOncology +