Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is stable . The mediastinal and hilar contours are stable . The right lung is clear . Streaky opacities at the left base most likely represent atelectasis . There is mild vascular congestion without edema . No pneumothorax .
    OUTPUT:
    
Mild vascular engorgement without frank edema . Subtle retrocardiac opacity suggests atelectasis however infection should be considered in the appropriate clinical setting . Conventional PA and Lateral chest radiographs recommended .