Fig 2.

A 59-year-old man with a recurrent chordoma in the aggressive tumor group. A, Two years after the first surgery, contrast-enhanced T1-weighted imaging shows an expansile mass extending to the suprasellar region (arrows). B, The ROI outlined in yellow on the ADC map represents decreased water diffusivity (ADC = 1.211 × 10⁻³ × mm²/s). C, Contrast-enhanced T1-weighted imaging obtained 8 months later shows an increase of the mass (volume change ratio, 1.67; arrowheads) with a doubling time of 5.5 months. The patient died of disease 15 months after the second MR imaging examination.