Fig. 5
From: Role of diffusion weighted MR-imaging in the evaluation of malignant mediastinal lesions
NHL (Burkitt lymphoma): A 13-year-old male clinically presenting with constitutional symptoms (anorexia and weight loss) and left parasternal and left lateral lower chest wall swellings. a Axial T1 WI, b axial T2 WI, and c axial STIR WI show a well-defined rather ovoid-shaped anterior mediastinal mass displaying intermediate T1, relatively bright T2 and bright STIR signal intensities. d Axial T2 WI, e axial STIR WI, and f coronal T2 WI show another oblong-shaped posterior mediastinal (left paravertebral) mass displaying similar signal characteristics. It extends from the level of D9 down to D12 vertebra. Intraspinal extension in the form of a large epidural soft tissue component is seen opposite D7/8 down to D12 vertebra on the g sagittal T2 WI with evident displacement and compression of the dorsal cord. The lesions show restricted diffusion by being bright on the h DWI and dark on the i ADC map: ADCmean = 0.507 × 10−3 mm2/s and ADCmin = 0.343 × 10−3 mm2/s. Associated findings: left parasternal and left lateral lower chest wall soft tissue lesions (seen encasing the related ribs). The upper abdominal cuts revealed circumferential gastric mural thickening. Both display similar signal characteristics to the aforementioned mediastinal masses. Minimal left pleural effusion