Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly hypoinflated with mild vascular congestion . Left lower lobe and retrocardiac streaky opacities are noted . No pleural effusion or pneumothorax . Mild cardiomegaly is stable . Mediastinal contour and hila are otherwise unremarkable . A right PICC tip is in the low SVC .
    OUTPUT:
    
1 . Mild vascular congestion . 2 . Left lower lobe and retrocardiac opacities are most consistent with atelectasis . Clinical correlation for superimposed infection is recommended . 3 . Right PICC tip in low SVC . No pneumothorax .