Fig. 6
♀, 47yo. with a histological diagnosis of moderately differentiated squamous carcinoma of the oropharynx. Baseline [18F]FDG PET/CT showed a high uptake into the oropharynx extended to the nasopharynx with bilateral cervical lymph nodes involvement. Subsequently, the patient underwent concomitant chemo-radiotherapy. End-of-treatment (EOT) PET/CT, performed 17 weeks after radiotherapy, showed mild uptake in the primary site (SUVmax 4.1) and a persistent high FDG-uptake in the left cervical lymph node (SUVmax 5.8). All visual criteria scored pathologically. The follow-up PET/CT, performed about 9 months after EOT, demonstrated the persistence/recurrence of both locoregional and lymph node disease