[Role of magnetic resonance in the evaluation of space-occupying mediastinal pathology].

: All MR findings in the study of mediastinal masses are discussed in this report, with the aim of evaluating the reliability of MR imaging in this pathology. The results obtained in the assessment of the extension of these masses are very useful and MR imaging appears to be the most informative of all techniques. Masses originating from the thymus, cystic lesions, substernal goitre, and esophageal tumors were considered. MRI results were compared to those obtained by CT scan which is considered of proven reliability for the evaluation of mediastinal masses.