Fig. 7From: Post-treatment benign changes versus recurrence in non-lymphoid head and neck malignancies: can diffusion-weighted magnetic resonance imaging end up the diagnostic challenge?Box and whisker plot. The plot shows the apparent diffusion coefficient (ADC) values of the suspicious lesions in the two study groups, with most of the lesions in the “locoregional recurrence/residual tumour” group exhibiting significantly lower ADC values than those in the “post-treatment benign changes” groupBack to article page