Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate enlargement of the cardiac silhouette is re - demonstrated . Again demonstrated is a rounded opacity in the left aorticopulmonary window compatible with the patient 's known pseudoaneurysm , similar in size and appearance compared to prior chest radiograph , currently measuring 5 .3 x 4 .2 cm . The aorta remains tortuous . There is no pulmonary vascular congestion . No pleural effusion or pneumothorax is seen . Minimal linear opacities in the right lung base likely reflect atelectasis . No pneumothorax is detected . There has been surgical removal of the right proximal humerus including the head . Mild dextroscoliosis of the thoracic spine is noted .
    OUTPUT:
    
Unchanged abnormal mediastinal contour corresponding to the patient 's known pseudoaneurysm , without evidence of rupture . Right basilar linear atelectasis .