Perineural recurrence of buccal cancer demonstrated by F-18 FDG PET/CT.

摘要

A 62-year-old man with locally advanced squamous cell carcinoma of the right retromolar trigone, pT4bN0M0, had surgery and postoperative concurrent chemoradiation therapy for 4 months. Right otalgia developed and facial magnetic resonance imaging revealed lesions which corresponded to postirradiation inflammation. F-18 FDG PET/CT showed recurrent lesions in the right buccal region and along the route of the mandibular division of the trigeminal nerve. This report indicates that F-18 FDG PET/CT could detect occult perineural tumor spread before identification on MRI especially in postoperative and postirradiation patients and effect intensity-modulated radiation therapy planning.