Post-treatment Neck CECT +/- PET INDICATION: [ ] Subsite: [ ] HPV or EBV status: [ ] Surgery: [ ] Chemoradiation: [ ] TECHNIQUE: COMPARISON: [] FINDINGS: Primary site: [] Neck: [] Post-treatment changes: Expected post-treatment changes are noted including [] Aerodigestive tract: [] Brain, orbits, spine, and lungs: [] IMPRESSION: Primary: CT-NI-RADS Score: [1]. [] Neck: CT-NI-RADS Score: [1]. []