Lemierre's syndrome following infectious mononucleosis: an unusual reason for neck pain

Blood cultures grew Gram-positive cocci, later identified as Streptococcus anginosus (by use of MALDI-TOF mass spectrometry); this finding confirmed the diagnosis of Lemierre's syndrome. A PET-CT scan with 18F-fluorodeoxyglucose (FDG; figure B) showed increased uptake in the right internal jugular vein, providing further evidence for the diagnosis of Lemierre's syndrome, and also showed a small area of increased uptake in the right lower lung lobe (possible septic embolus). DH collected FDG PET-CT data, analysed data, and revised and edited the manuscript.