Fig. 1
From: Role of diffusion weighted MR-imaging in the evaluation of malignant mediastinal lesions
Malignant B3 thymoma. A 42-year-old female patient clinically presenting with back and right upper limb pain underwent MDCT of the chest that revealed an anterior mediastinal mass. a Axial T1 WI, b axial T2 WI, and c axial STIR WI show a small well-defined oval-shaped anterior (prevascular) mediastinal mass displaying intermediate T1 and relatively bright T2 and bright STIR signal intensities. The lesion shows restricted diffusion by being bright on e DWI and dark on the f ADC map. ADCmean = 0.895 × 10−3 mm2/s and ADCmin = 0.769 ×10−3 mm2/s. Associated findings: mid-dorsal sclerotic vertebra as seen on d coronal T1 WI; latter proven metastatic by bone scan. Right lobar hepatic focal lesion seen on h axial T1, T2, STIR and DWI and ADC map (from left to right) displaying low T1 and high T2 and STIR signal intensities with evident diffusion restriction; biopsy proven to be metastatic