Fig. 1

(A) Coronal 18F-FDG positron emission tomography (PET) and (B) contrast enhanced computed tomography (CT). The arrows indicate moderate uptake in a round structure located in close relation to the left submandibular gland. The lesion was new compared to an old 18F-FDG PET/CT from 2007 indicating a Warthin tumor or a lymph node. Extirpation/biopsy showed a lymph node with a nodular growth pattern with scattered CD30 and CD 15 positive Reed-Sternberg cells