Contrast-enhanced CT scan of the chest obtained at the level of aortic arch shows a large metastatic lymph node (arrow) anterior and slightly right to the trachea (right lower paratracheal node) and a mass with irregular margins (asterisk) in the peripheral portion of the right upper lobe along the chest wall. Note the age-related calcification in the aortic arch. It is important to remember that is not uncommon to see a few normal sized (<1 cm) lymph nodes in the paratracheal region.