Performance of 18F-FDG Micro-PET-CT in the Assessment of Surgical Margins in Head and Neck Cancer

This trial is evaluating whether a small, specialized PET/CT scanner (micro-PET-CT) can help surgeons confirm in real time that all cancer has been removed during operations for head and neck cancer. **You may be eligible if...** - You are 18 or older with a malignant tumor in the mouth, throat, voice box, sinuses, or salivary glands - Your cancer has not spread to distant organs (M0) - You are scheduled for surgery and your cancer is considered operable - You are covered under a social security plan (French social security required) **You may NOT be eligible if...** - You have severe liver failure (Child-Pugh C) - You are under legal guardianship or protection - You are pregnant or breastfeeding - You have an allergy to the imaging tracer (18F-FDG) - You have uncontrolled diabetes - You have moderate to severe kidney disease - You are unable to understand or comply with study requirements Talk to your doctor to see if this trial is right for you.