Fig. 4
a–d The maximum intensity projection (MIP) shows extensive involvement of the Waldeyer's ring, bilateral cervical lymph node involvement, and three focal lesions in the skeleton (right humerus, right pelvis, left femur) (a). The pharyngeal tonsil (red rim) has asymmetric and inhomogeneous tracer uptake on [18F]-FDG-PET images (SUVmax right: 14.36; SUVmax left: 11.31) (blue arrows) (b, d). On T2-TIRM transversal MR images, the pharyngeal tonsil is markedly enlarged as a result of lymphoma involvement (d)