An infiltrating hypodense mass lesion with areas of peripheral enhancement in the left paratracheal region displacing the branches of the aortic arch. The lesion extends into the prevertebral space but no bone destruction or communication with the spinal canal.
Extension into the retroperitoneal space is through the esophageal hiatus and it encases the branches of the coeliac axis and superior mesenteric artery.
Few smaller separate lesions with similar characteristics are seen in the vicinity of the main mediastinal lesion.
Multiple poorly enhancing soft tissue density nodules are seen in the subcutaneous tissue plane.