Figure 1.

A 54-year-old man with cancer of the posterior part of the tongue on the right. (a) T2-weighted axial MR image showing a slightly hyperintense lesion on the right-side of the tongue (arrow). (b) DW image at a b-value of 1000 s/mm² clearly depicts the tongue tumour as a hyperintense lesion (arrow) without crossing the midline. (c) The same lesion is slightly hypointense on the calculated ADC map (arrow, ADC = 1.03×10⁻³ mm²/s). Note the small lymph node (4 mm) at level II on the right (arrowhead) which is bright in (b) and dark in (c) with an ADC value of 0.74×10⁻³ mm²/s suspicious for the presence of a metastasis, which has been confirmed by histology.