Thymic gland tumor represents 0.2 – 1.5% of all adultmalignancies and also represents 20% of mediastinal tumors.MRI has an important role in evaluation of thymic glandtumors with special focus on thymic epithelial tumors incorrelation with who classification.New techniques chemical shift MR. Imaging and dynanicMR imaging differentiates between benign & malignant tumors.