Fig. 22From: Non-neoplastic pathology at the crossroads between neck imaging and cardiothoracic imagingThymic hyperplasia. Axial CT image of a 60-year-old patient undergoing chemotherapy demonstrates an anterior mediastinal mass (arrow) with the expected location, configuration, and attenuation of the thymus gland, consistent with rebound thymic hyperplasia secondary to chemotherapy. It is important to distinguish thymic hyperplasia from thymoma, which can present as asymmetry of the lobes, focal contour abnormality, and demonstrate focal increased FDG uptakeBack to article page