MRI検査では、縦隔病変の質的診断（良性か悪性か）が可能です。
Usuda K, et al, Diffusion Weighted Imaging Can Distinguish Benign from Malignant Mediastinal Tumors and Mass Lesions. Comparison with Positron Emission Tomography. Asian Pac. J. Cancer Prev. 16, 6469-6475, 2015.
Gumustas SS, et al. Malignant versus benign mediastinal lesions. Quantitative assessment with diffusion weighted MR imaging. Eur Radiol. 2011: 21, 2255-60.
