Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . Increased interstitial markings are seen throughout the lungs . There is also focal increased opacity at the right lung base overlying the hemidiaphragm and region of atelectasis seen on previous exam . No other focal consolidation identified . Cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Pulmonary vascular congestion and right basilar opacity , may be atelectasis , although infection is not entirely excluded .