A large soft tissue attenuation mass occupying the anterior mediastinal displaying homogenous attenuation with low density areas of cystic changes inside. It extends to the middle mediastinum to occupy the pretracheal space and involve the right hilum. Inferiorly it is inseparable from the anterior pericardium. Compression upon the SVC and encasement of aorta and great vessels are noted. There is also mild right costal pleural thickening and enhancement suggesting infiltration with mild pleural effusion and abdominal retrocaval lymph nodes.