Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right PICC line ends in the mid SVC . Median sternotomy wires and aortic valve replacement appear unchanged . Lung volumes are slightly low , unchanged . Elevation of the left hemidiaphragm is more pronounced , compatible with atelectasis and volume loss . Compared to the prior exam , increased opacity in the left lung base could represent atelectasis , but focal consolidation and aspiration in the appropriate clinical setting is possible and may be present on recent CT . Mild cardiomegaly persists . No pleural effusion , frank pulmonary edema , or pneumothorax .
    OUTPUT:
    
1 . Right PICC line ends in mid SVC . 2 . Moderate left lung atelectasis . 3 . Increased opacity in the left lung base could represent atelectasis and / or aspiration in the appropriate clinical setting .