Fig. 4From: Imaging of human papilloma virus (HPV) related oropharynx tumour: what we know to dateHPV + oropharyngeal cancer (a1, b1) with adjacent cystic metastatic lymph node (a2, b2). (a) T2w; (b) post-contrast T1w. The relative higher soft tissue resolution of MRI highlights the contained nature of the lesion and its well-defined bordersBack to article page